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Finding the Fourth Proportional to 311,577.69, 429,989.75 and 175,617.30

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Solution

The fourth proportional to 311,577.69, 429,989.75 and 175,617.30 is: 242,358.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,577.69 : 429,989.75 = 175,617.30 : x
  2. Step 2: Convert to fraction form
    311,577.69/429,989.75 = 175,617.30/x
  3. Step 3: Cross multiply
    311,577.69x = 429,989.75 × 175,617.30
  4. Step 4: Simplify right side
    311,577.69x = 75,513,638,044.59
  5. Step 5: Solve for x
    x = 75,513,638,044.59/311,577.69
  6. Step 6: Final answer
    x = 242,358.94

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1.5x scale

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.