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Finding the Fourth Proportional to 321,921.60, 482,882.40 and 144,434.40

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Solution

The fourth proportional to 321,921.60, 482,882.40 and 144,434.40 is: 216,651.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,921.60 : 482,882.40 = 144,434.40 : x
  2. Step 2: Convert to fraction form
    321,921.60/482,882.40 = 144,434.40/x
  3. Step 3: Cross multiply
    321,921.60x = 482,882.40 × 144,434.40
  4. Step 4: Simplify right side
    321,921.60x = 69,744,829,714.56
  5. Step 5: Solve for x
    x = 69,744,829,714.56/321,921.60
  6. Step 6: Final answer
    x = 216,651.60

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1.5x scale

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.