Home / 438,225.59-657,436.85-138,724.14

Finding the Fourth Proportional to 438,225.59, 657,436.85 and 138,724.14

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Solution

The fourth proportional to 438,225.59, 657,436.85 and 138,724.14 is: 208,117.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,225.59 : 657,436.85 = 138,724.14 : x
  2. Step 2: Convert to fraction form
    438,225.59/657,436.85 = 138,724.14/x
  3. Step 3: Cross multiply
    438,225.59x = 657,436.85 × 138,724.14
  4. Step 4: Simplify right side
    438,225.59x = 91,202,360,926.94
  5. Step 5: Solve for x
    x = 91,202,360,926.94/438,225.59
  6. Step 6: Final answer
    x = 208,117.38

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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.