Home / 279,811.18-386,128.20-152,484.04

Finding the Fourth Proportional to 279,811.18, 386,128.20 and 152,484.04

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Solution

The fourth proportional to 279,811.18, 386,128.20 and 152,484.04 is: 210,421.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,811.18 : 386,128.20 = 152,484.04 : x
  2. Step 2: Convert to fraction form
    279,811.18/386,128.20 = 152,484.04/x
  3. Step 3: Cross multiply
    279,811.18x = 386,128.20 × 152,484.04
  4. Step 4: Simplify right side
    279,811.18x = 58,878,387,893.93
  5. Step 5: Solve for x
    x = 58,878,387,893.93/279,811.18
  6. Step 6: Final answer
    x = 210,421.86

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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.