Home / 318,983.20-478,458.89-119,288.90

Finding the Fourth Proportional to 318,983.20, 478,458.89 and 119,288.90

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Solution

The fourth proportional to 318,983.20, 478,458.89 and 119,288.90 is: 178,927.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,983.20 : 478,458.89 = 119,288.90 : x
  2. Step 2: Convert to fraction form
    318,983.20/478,458.89 = 119,288.90/x
  3. Step 3: Cross multiply
    318,983.20x = 478,458.89 × 119,288.90
  4. Step 4: Simplify right side
    318,983.20x = 57,074,835,283.02
  5. Step 5: Solve for x
    x = 57,074,835,283.02/318,983.20
  6. Step 6: Final answer
    x = 178,927.40

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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.