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Finding the Fourth Proportional to 318,700.28, 439,797.88 and 175,461.40

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Solution

The fourth proportional to 318,700.28, 439,797.88 and 175,461.40 is: 242,132.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,700.28 : 439,797.88 = 175,461.40 : x
  2. Step 2: Convert to fraction form
    318,700.28/439,797.88 = 175,461.40/x
  3. Step 3: Cross multiply
    318,700.28x = 439,797.88 × 175,461.40
  4. Step 4: Simplify right side
    318,700.28x = 77,167,551,741.83
  5. Step 5: Solve for x
    x = 77,167,551,741.83/318,700.28
  6. Step 6: Final answer
    x = 242,132.05

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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.