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Finding the Fourth Proportional to 386,374.84, 579,416.65 and 161,750.79

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Solution

The fourth proportional to 386,374.84, 579,416.65 and 161,750.79 is: 242,565.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,374.84 : 579,416.65 = 161,750.79 : x
  2. Step 2: Convert to fraction form
    386,374.84/579,416.65 = 161,750.79/x
  3. Step 3: Cross multiply
    386,374.84x = 579,416.65 × 161,750.79
  4. Step 4: Simplify right side
    386,374.84x = 93,721,100,472.28
  5. Step 5: Solve for x
    x = 93,721,100,472.28/386,374.84
  6. Step 6: Final answer
    x = 242,565.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.