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Finding the Fourth Proportional to 508,632.20, 762,948.30 and 153,609.20

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Solution

The fourth proportional to 508,632.20, 762,948.30 and 153,609.20 is: 230,413.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,632.20 : 762,948.30 = 153,609.20 : x
  2. Step 2: Convert to fraction form
    508,632.20/762,948.30 = 153,609.20/x
  3. Step 3: Cross multiply
    508,632.20x = 762,948.30 × 153,609.20
  4. Step 4: Simplify right side
    508,632.20x = 117,195,878,004.36
  5. Step 5: Solve for x
    x = 117,195,878,004.36/508,632.20
  6. Step 6: Final answer
    x = 230,413.80

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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.