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Finding the Fourth Proportional to 279,869.40, 386,205.48 and 152,543.88

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Solution

The fourth proportional to 279,869.40, 386,205.48 and 152,543.88 is: 210,502.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,869.40 : 386,205.48 = 152,543.88 : x
  2. Step 2: Convert to fraction form
    279,869.40/386,205.48 = 152,543.88/x
  3. Step 3: Cross multiply
    279,869.40x = 386,205.48 × 152,543.88
  4. Step 4: Simplify right side
    279,869.40x = 58,913,282,396.46
  5. Step 5: Solve for x
    x = 58,913,282,396.46/279,869.40
  6. Step 6: Final answer
    x = 210,502.76

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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.