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Finding the Fourth Proportional to 318,665.52, 439,756.02 and 175,428

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Solution

The fourth proportional to 318,665.52, 439,756.02 and 175,428 is: 242,089.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,665.52 : 439,756.02 = 175,428 : x
  2. Step 2: Convert to fraction form
    318,665.52/439,756.02 = 175,428/x
  3. Step 3: Cross multiply
    318,665.52x = 439,756.02 × 175,428
  4. Step 4: Simplify right side
    318,665.52x = 77,145,519,076.56
  5. Step 5: Solve for x
    x = 77,145,519,076.56/318,665.52
  6. Step 6: Final answer
    x = 242,089.32

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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.