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Finding the Fourth Proportional to 508,984.20, 763,281.90 and 153,880.20

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Solution

The fourth proportional to 508,984.20, 763,281.90 and 153,880.20 is: 230,761.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,984.20 : 763,281.90 = 153,880.20 : x
  2. Step 2: Convert to fraction form
    508,984.20/763,281.90 = 153,880.20/x
  3. Step 3: Cross multiply
    508,984.20x = 763,281.90 × 153,880.20
  4. Step 4: Simplify right side
    508,984.20x = 117,453,971,428.38
  5. Step 5: Solve for x
    x = 117,453,971,428.38/508,984.20
  6. Step 6: Final answer
    x = 230,761.53

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.