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Finding the Fourth Proportional to 279,750.96, 386,060.64 and 152,426.40

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Solution

The fourth proportional to 279,750.96, 386,060.64 and 152,426.40 is: 210,350.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,750.96 : 386,060.64 = 152,426.40 : x
  2. Step 2: Convert to fraction form
    279,750.96/386,060.64 = 152,426.40/x
  3. Step 3: Cross multiply
    279,750.96x = 386,060.64 × 152,426.40
  4. Step 4: Simplify right side
    279,750.96x = 58,845,833,536.90
  5. Step 5: Solve for x
    x = 58,845,833,536.90/279,750.96
  6. Step 6: Final answer
    x = 210,350.78

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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.