Home / 438,003.40-657,001.23-138,484.18

Finding the Fourth Proportional to 438,003.40, 657,001.23 and 138,484.18

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Solution

The fourth proportional to 438,003.40, 657,001.23 and 138,484.18 is: 207,725.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,003.40 : 657,001.23 = 138,484.18 : x
  2. Step 2: Convert to fraction form
    438,003.40/657,001.23 = 138,484.18/x
  3. Step 3: Cross multiply
    438,003.40x = 657,001.23 × 138,484.18
  4. Step 4: Simplify right side
    438,003.40x = 90,984,276,897.48
  5. Step 5: Solve for x
    x = 90,984,276,897.48/438,003.40
  6. Step 6: Final answer
    x = 207,725.05

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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.