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Finding the Fourth Proportional to 318,395.61, 439,381.26 and 175,147.11

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Solution

The fourth proportional to 318,395.61, 439,381.26 and 175,147.11 is: 241,700.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,395.61 : 439,381.26 = 175,147.11 : x
  2. Step 2: Convert to fraction form
    318,395.61/439,381.26 = 175,147.11/x
  3. Step 3: Cross multiply
    318,395.61x = 439,381.26 × 175,147.11
  4. Step 4: Simplify right side
    318,395.61x = 76,956,357,877.16
  5. Step 5: Solve for x
    x = 76,956,357,877.16/318,395.61
  6. Step 6: Final answer
    x = 241,700.44

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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.