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Finding the Fourth Proportional to 144,297.60, 216,446.40 and 39,129.60

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Solution

The fourth proportional to 144,297.60, 216,446.40 and 39,129.60 is: 58,694.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,297.60 : 216,446.40 = 39,129.60 : x
  2. Step 2: Convert to fraction form
    144,297.60/216,446.40 = 39,129.60/x
  3. Step 3: Cross multiply
    144,297.60x = 216,446.40 × 39,129.60
  4. Step 4: Simplify right side
    144,297.60x = 8,469,461,053.44
  5. Step 5: Solve for x
    x = 8,469,461,053.44/144,297.60
  6. Step 6: Final answer
    x = 58,694.40

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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.