Home / 291,350,337.20-437,025,505.80-199,517,332.40

Finding the Fourth Proportional to 291,350,337.20, 437,025,505.80 and 199,517,332.40

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Solution

The fourth proportional to 291,350,337.20, 437,025,505.80 and 199,517,332.40 is: 299,275,998.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,350,337.20 : 437,025,505.80 = 199,517,332.40 : x
  2. Step 2: Convert to fraction form
    291,350,337.20/437,025,505.80 = 199,517,332.40/x
  3. Step 3: Cross multiply
    291,350,337.20x = 437,025,505.80 × 199,517,332.40
  4. Step 4: Simplify right side
    291,350,337.20x = 87,194,163,107,976,736
  5. Step 5: Solve for x
    x = 87,194,163,107,976,736/291,350,337.20
  6. Step 6: Final answer
    x = 299,275,998.60

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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.