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Finding the Fourth Proportional to 239,615.70, 359,423.55 and 99,359.70

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Solution

The fourth proportional to 239,615.70, 359,423.55 and 99,359.70 is: 149,039.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,615.70 : 359,423.55 = 99,359.70 : x
  2. Step 2: Convert to fraction form
    239,615.70/359,423.55 = 99,359.70/x
  3. Step 3: Cross multiply
    239,615.70x = 359,423.55 × 99,359.70
  4. Step 4: Simplify right side
    239,615.70x = 35,712,216,100.94
  5. Step 5: Solve for x
    x = 35,712,216,100.94/239,615.70
  6. Step 6: Final answer
    x = 149,039.55

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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.