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Finding the Fourth Proportional to 478,671.48, 660,557.60 and 260,881.96

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Solution

The fourth proportional to 478,671.48, 660,557.60 and 260,881.96 is: 360,012.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,671.48 : 660,557.60 = 260,881.96 : x
  2. Step 2: Convert to fraction form
    478,671.48/660,557.60 = 260,881.96/x
  3. Step 3: Cross multiply
    478,671.48x = 660,557.60 × 260,881.96
  4. Step 4: Simplify right side
    478,671.48x = 172,327,561,380.90
  5. Step 5: Solve for x
    x = 172,327,561,380.90/478,671.48
  6. Step 6: Final answer
    x = 360,012.18

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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.