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Finding the Fourth Proportional to 279,821.69, 386,156.66 and 152,500.02

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Solution

The fourth proportional to 279,821.69, 386,156.66 and 152,500.02 is: 210,451.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,821.69 : 386,156.66 = 152,500.02 : x
  2. Step 2: Convert to fraction form
    279,821.69/386,156.66 = 152,500.02/x
  3. Step 3: Cross multiply
    279,821.69x = 386,156.66 × 152,500.02
  4. Step 4: Simplify right side
    279,821.69x = 58,888,898,373.13
  5. Step 5: Solve for x
    x = 58,888,898,373.13/279,821.69
  6. Step 6: Final answer
    x = 210,451.51

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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.