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Finding the Fourth Proportional to 438,483.24, 657,743.22 and 138,957.24

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Solution

The fourth proportional to 438,483.24, 657,743.22 and 138,957.24 is: 208,441.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,483.24 : 657,743.22 = 138,957.24 : x
  2. Step 2: Convert to fraction form
    438,483.24/657,743.22 = 138,957.24/x
  3. Step 3: Cross multiply
    438,483.24x = 657,743.22 × 138,957.24
  4. Step 4: Simplify right side
    438,483.24x = 91,398,182,479.91
  5. Step 5: Solve for x
    x = 91,398,182,479.91/438,483.24
  6. Step 6: Final answer
    x = 208,441.68

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1.5x scale

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.