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Finding the Fourth Proportional to 387,753.52, 581,630.40 and 121,514.02

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Solution

The fourth proportional to 387,753.52, 581,630.40 and 121,514.02 is: 182,271.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,753.52 : 581,630.40 = 121,514.02 : x
  2. Step 2: Convert to fraction form
    387,753.52/581,630.40 = 121,514.02/x
  3. Step 3: Cross multiply
    387,753.52x = 581,630.40 × 121,514.02
  4. Step 4: Simplify right side
    387,753.52x = 70,676,248,058.21
  5. Step 5: Solve for x
    x = 70,676,248,058.21/387,753.52
  6. Step 6: Final answer
    x = 182,271.07

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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.