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Finding the Fourth Proportional to 318,614.84, 439,688.60 and 175,373.86

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Solution

The fourth proportional to 318,614.84, 439,688.60 and 175,373.86 is: 242,015.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,614.84 : 439,688.60 = 175,373.86 : x
  2. Step 2: Convert to fraction form
    318,614.84/439,688.60 = 175,373.86/x
  3. Step 3: Cross multiply
    318,614.84x = 439,688.60 × 175,373.86
  4. Step 4: Simplify right side
    318,614.84x = 77,109,887,472.45
  5. Step 5: Solve for x
    x = 77,109,887,472.45/318,614.84
  6. Step 6: Final answer
    x = 242,015.99

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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.