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Finding the Fourth Proportional to 508,717.30, 763,185.30 and 153,767.20

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Solution

The fourth proportional to 508,717.30, 763,185.30 and 153,767.20 is: 230,683.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,717.30 : 763,185.30 = 153,767.20 : x
  2. Step 2: Convert to fraction form
    508,717.30/763,185.30 = 153,767.20/x
  3. Step 3: Cross multiply
    508,717.30x = 763,185.30 × 153,767.20
  4. Step 4: Simplify right side
    508,717.30x = 117,352,866,662.16
  5. Step 5: Solve for x
    x = 117,352,866,662.16/508,717.30
  6. Step 6: Final answer
    x = 230,683.85

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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.