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Finding the Fourth Proportional to 321,640.60, 482,460.90 and 144,493.60

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Solution

The fourth proportional to 321,640.60, 482,460.90 and 144,493.60 is: 216,740.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,640.60 : 482,460.90 = 144,493.60 : x
  2. Step 2: Convert to fraction form
    321,640.60/482,460.90 = 144,493.60/x
  3. Step 3: Cross multiply
    321,640.60x = 482,460.90 × 144,493.60
  4. Step 4: Simplify right side
    321,640.60x = 69,712,512,300.24
  5. Step 5: Solve for x
    x = 69,712,512,300.24/321,640.60
  6. Step 6: Final answer
    x = 216,740.40

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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.