Home / 279,929.80-386,301.18-159,061.60

Finding the Fourth Proportional to 279,929.80, 386,301.18 and 159,061.60

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Solution

The fourth proportional to 279,929.80, 386,301.18 and 159,061.60 is: 219,503.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,929.80 : 386,301.18 = 159,061.60 : x
  2. Step 2: Convert to fraction form
    279,929.80/386,301.18 = 159,061.60/x
  3. Step 3: Cross multiply
    279,929.80x = 386,301.18 × 159,061.60
  4. Step 4: Simplify right side
    279,929.80x = 61,445,683,772.69
  5. Step 5: Solve for x
    x = 61,445,683,772.69/279,929.80
  6. Step 6: Final answer
    x = 219,503.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.