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Finding the Fourth Proportional to 354,990.60, 532,226.70 and 144,520.20

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Solution

The fourth proportional to 354,990.60, 532,226.70 and 144,520.20 is: 216,674.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,990.60 : 532,226.70 = 144,520.20 : x
  2. Step 2: Convert to fraction form
    354,990.60/532,226.70 = 144,520.20/x
  3. Step 3: Cross multiply
    354,990.60x = 532,226.70 × 144,520.20
  4. Step 4: Simplify right side
    354,990.60x = 76,917,509,129.34
  5. Step 5: Solve for x
    x = 76,917,509,129.34/354,990.60
  6. Step 6: Final answer
    x = 216,674.78

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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.