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Finding the Fourth Proportional to 418,020.21, 577,044.03 and 282,237.88

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Solution

The fourth proportional to 418,020.21, 577,044.03 and 282,237.88 is: 389,607.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,020.21 : 577,044.03 = 282,237.88 : x
  2. Step 2: Convert to fraction form
    418,020.21/577,044.03 = 282,237.88/x
  3. Step 3: Cross multiply
    418,020.21x = 577,044.03 × 282,237.88
  4. Step 4: Simplify right side
    418,020.21x = 162,863,684,399.45
  5. Step 5: Solve for x
    x = 162,863,684,399.45/418,020.21
  6. Step 6: Final answer
    x = 389,607.21

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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.