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Finding the Fourth Proportional to 437,042.80, 655,483.20 and 121,434.40

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Solution

The fourth proportional to 437,042.80, 655,483.20 and 121,434.40 is: 182,129.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,042.80 : 655,483.20 = 121,434.40 : x
  2. Step 2: Convert to fraction form
    437,042.80/655,483.20 = 121,434.40/x
  3. Step 3: Cross multiply
    437,042.80x = 655,483.20 × 121,434.40
  4. Step 4: Simplify right side
    437,042.80x = 79,598,209,102.08
  5. Step 5: Solve for x
    x = 79,598,209,102.08/437,042.80
  6. Step 6: Final answer
    x = 182,129.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.