Home / 239,731.68-359,486.28-139,920.72

Finding the Fourth Proportional to 239,731.68, 359,486.28 and 139,920.72

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Solution

The fourth proportional to 239,731.68, 359,486.28 and 139,920.72 is: 209,816.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,731.68 : 359,486.28 = 139,920.72 : x
  2. Step 2: Convert to fraction form
    239,731.68/359,486.28 = 139,920.72/x
  3. Step 3: Cross multiply
    239,731.68x = 359,486.28 × 139,920.72
  4. Step 4: Simplify right side
    239,731.68x = 50,299,579,127.72
  5. Step 5: Solve for x
    x = 50,299,579,127.72/239,731.68
  6. Step 6: Final answer
    x = 209,816.15

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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.