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Finding the Fourth Proportional to 478,053.89, 659,565.40 and 271,288.01

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Solution

The fourth proportional to 478,053.89, 659,565.40 and 271,288.01 is: 374,292.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,053.89 : 659,565.40 = 271,288.01 : x
  2. Step 2: Convert to fraction form
    478,053.89/659,565.40 = 271,288.01/x
  3. Step 3: Cross multiply
    478,053.89x = 659,565.40 × 271,288.01
  4. Step 4: Simplify right side
    478,053.89x = 178,932,186,479.77
  5. Step 5: Solve for x
    x = 178,932,186,479.77/478,053.89
  6. Step 6: Final answer
    x = 374,292.92

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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.