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Finding the Fourth Proportional to 418,626.12, 577,692.02 and 237,355.40

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Solution

The fourth proportional to 418,626.12, 577,692.02 and 237,355.40 is: 327,543.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,626.12 : 577,692.02 = 237,355.40 : x
  2. Step 2: Convert to fraction form
    418,626.12/577,692.02 = 237,355.40/x
  3. Step 3: Cross multiply
    418,626.12x = 577,692.02 × 237,355.40
  4. Step 4: Simplify right side
    418,626.12x = 137,118,320,483.91
  5. Step 5: Solve for x
    x = 137,118,320,483.91/418,626.12
  6. Step 6: Final answer
    x = 327,543.63

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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.