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Finding the Fourth Proportional to 551,061.86, 760,248.05 and 318,334.98

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Solution

The fourth proportional to 551,061.86, 760,248.05 and 318,334.98 is: 439,176.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,061.86 : 760,248.05 = 318,334.98 : x
  2. Step 2: Convert to fraction form
    551,061.86/760,248.05 = 318,334.98/x
  3. Step 3: Cross multiply
    551,061.86x = 760,248.05 × 318,334.98
  4. Step 4: Simplify right side
    551,061.86x = 242,013,546,200.11
  5. Step 5: Solve for x
    x = 242,013,546,200.11/551,061.86
  6. Step 6: Final answer
    x = 439,176.73

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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.