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Finding the Fourth Proportional to 397,287.60, 595,931.40 and 130,983.90

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Solution

The fourth proportional to 397,287.60, 595,931.40 and 130,983.90 is: 196,475.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,287.60 : 595,931.40 = 130,983.90 : x
  2. Step 2: Convert to fraction form
    397,287.60/595,931.40 = 130,983.90/x
  3. Step 3: Cross multiply
    397,287.60x = 595,931.40 × 130,983.90
  4. Step 4: Simplify right side
    397,287.60x = 78,057,418,904.46
  5. Step 5: Solve for x
    x = 78,057,418,904.46/397,287.60
  6. Step 6: Final answer
    x = 196,475.85

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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.