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Finding the Fourth Proportional to 472,242.30, 708,363.45 and 259,665.90

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Solution

The fourth proportional to 472,242.30, 708,363.45 and 259,665.90 is: 389,498.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,242.30 : 708,363.45 = 259,665.90 : x
  2. Step 2: Convert to fraction form
    472,242.30/708,363.45 = 259,665.90/x
  3. Step 3: Cross multiply
    472,242.30x = 708,363.45 × 259,665.90
  4. Step 4: Simplify right side
    472,242.30x = 183,937,832,771.36
  5. Step 5: Solve for x
    x = 183,937,832,771.36/472,242.30
  6. Step 6: Final answer
    x = 389,498.85

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Similar ratio
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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.