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Finding the Fourth Proportional to 438,377.04, 657,598.50 and 138,881.16

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Solution

The fourth proportional to 438,377.04, 657,598.50 and 138,881.16 is: 208,332.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,377.04 : 657,598.50 = 138,881.16 : x
  2. Step 2: Convert to fraction form
    438,377.04/657,598.50 = 138,881.16/x
  3. Step 3: Cross multiply
    438,377.04x = 657,598.50 × 138,881.16
  4. Step 4: Simplify right side
    438,377.04x = 91,328,042,494.26
  5. Step 5: Solve for x
    x = 91,328,042,494.26/438,377.04
  6. Step 6: Final answer
    x = 208,332.18

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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.