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Finding the Fourth Proportional to 508,931.80, 763,397.70 and 154,000.60

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Solution

The fourth proportional to 508,931.80, 763,397.70 and 154,000.60 is: 231,000.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,931.80 : 763,397.70 = 154,000.60 : x
  2. Step 2: Convert to fraction form
    508,931.80/763,397.70 = 154,000.60/x
  3. Step 3: Cross multiply
    508,931.80x = 763,397.70 × 154,000.60
  4. Step 4: Simplify right side
    508,931.80x = 117,563,703,838.62
  5. Step 5: Solve for x
    x = 117,563,703,838.62/508,931.80
  6. Step 6: Final answer
    x = 231,000.90

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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.