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Finding the Fourth Proportional to 478,300.27, 660,066.87 and 260,517.20

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Solution

The fourth proportional to 478,300.27, 660,066.87 and 260,517.20 is: 359,520.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,300.27 : 660,066.87 = 260,517.20 : x
  2. Step 2: Convert to fraction form
    478,300.27/660,066.87 = 260,517.20/x
  3. Step 3: Cross multiply
    478,300.27x = 660,066.87 × 260,517.20
  4. Step 4: Simplify right side
    478,300.27x = 171,958,773,246.43
  5. Step 5: Solve for x
    x = 171,958,773,246.43/478,300.27
  6. Step 6: Final answer
    x = 359,520.55

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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.