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Finding the Fourth Proportional to 478,767.92, 660,695.33 and 260,976.53

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Solution

The fourth proportional to 478,767.92, 660,695.33 and 260,976.53 is: 360,145.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,767.92 : 660,695.33 = 260,976.53 : x
  2. Step 2: Convert to fraction form
    478,767.92/660,695.33 = 260,976.53/x
  3. Step 3: Cross multiply
    478,767.92x = 660,695.33 × 260,976.53
  4. Step 4: Simplify right side
    478,767.92x = 172,425,976,914.79
  5. Step 5: Solve for x
    x = 172,425,976,914.79/478,767.92
  6. Step 6: Final answer
    x = 360,145.22

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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.