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Finding the Fourth Proportional to 487,995.30, 731,971.40 and 133,009.29

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Solution

The fourth proportional to 487,995.30, 731,971.40 and 133,009.29 is: 199,508.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,995.30 : 731,971.40 = 133,009.29 : x
  2. Step 2: Convert to fraction form
    487,995.30/731,971.40 = 133,009.29/x
  3. Step 3: Cross multiply
    487,995.30x = 731,971.40 × 133,009.29
  4. Step 4: Simplify right side
    487,995.30x = 97,358,995,549.26
  5. Step 5: Solve for x
    x = 97,358,995,549.26/487,995.30
  6. Step 6: Final answer
    x = 199,508.06

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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.