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Finding the Fourth Proportional to 239,387.30, 359,133.48 and 70,920.80

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Solution

The fourth proportional to 239,387.30, 359,133.48 and 70,920.80 is: 106,396.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,387.30 : 359,133.48 = 70,920.80 : x
  2. Step 2: Convert to fraction form
    239,387.30/359,133.48 = 70,920.80/x
  3. Step 3: Cross multiply
    239,387.30x = 359,133.48 × 70,920.80
  4. Step 4: Simplify right side
    239,387.30x = 25,470,033,708.38
  5. Step 5: Solve for x
    x = 25,470,033,708.38/239,387.30
  6. Step 6: Final answer
    x = 106,396.76

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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.