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Finding the Fourth Proportional to 351,473.80, 527,210.70 and 257,470.60

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Solution

The fourth proportional to 351,473.80, 527,210.70 and 257,470.60 is: 386,205.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,473.80 : 527,210.70 = 257,470.60 : x
  2. Step 2: Convert to fraction form
    351,473.80/527,210.70 = 257,470.60/x
  3. Step 3: Cross multiply
    351,473.80x = 527,210.70 × 257,470.60
  4. Step 4: Simplify right side
    351,473.80x = 135,741,255,255.42
  5. Step 5: Solve for x
    x = 135,741,255,255.42/351,473.80
  6. Step 6: Final answer
    x = 386,205.90

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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.