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Finding the Fourth Proportional to 418,553.40, 577,587.90 and 227,560.20

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Solution

The fourth proportional to 418,553.40, 577,587.90 and 227,560.20 is: 314,024.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,553.40 : 577,587.90 = 227,560.20 : x
  2. Step 2: Convert to fraction form
    418,553.40/577,587.90 = 227,560.20/x
  3. Step 3: Cross multiply
    418,553.40x = 577,587.90 × 227,560.20
  4. Step 4: Simplify right side
    418,553.40x = 131,436,018,041.58
  5. Step 5: Solve for x
    x = 131,436,018,041.58/418,553.40
  6. Step 6: Final answer
    x = 314,024.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.