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Finding the Fourth Proportional to 279,756.96, 386,064.68 and 152,432.56

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Solution

The fourth proportional to 279,756.96, 386,064.68 and 152,432.56 is: 210,356.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,756.96 : 386,064.68 = 152,432.56 : x
  2. Step 2: Convert to fraction form
    279,756.96/386,064.68 = 152,432.56/x
  3. Step 3: Cross multiply
    279,756.96x = 386,064.68 × 152,432.56
  4. Step 4: Simplify right side
    279,756.96x = 58,848,827,497.98
  5. Step 5: Solve for x
    x = 58,848,827,497.98/279,756.96
  6. Step 6: Final answer
    x = 210,356.97

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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.