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Finding the Fourth Proportional to 545,691.47, 818,337.62 and 208,565.42

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Solution

The fourth proportional to 545,691.47, 818,337.62 and 208,565.42 is: 312,771.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,691.47 : 818,337.62 = 208,565.42 : x
  2. Step 2: Convert to fraction form
    545,691.47/818,337.62 = 208,565.42/x
  3. Step 3: Cross multiply
    545,691.47x = 818,337.62 × 208,565.42
  4. Step 4: Simplify right side
    545,691.47x = 170,676,925,846.83
  5. Step 5: Solve for x
    x = 170,676,925,846.83/545,691.47
  6. Step 6: Final answer
    x = 312,771.84

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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.