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Finding the Fourth Proportional to 279,260.79, 385,363.56 and 156,741.68

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Solution

The fourth proportional to 279,260.79, 385,363.56 and 156,741.68 is: 216,294.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,260.79 : 385,363.56 = 156,741.68 : x
  2. Step 2: Convert to fraction form
    279,260.79/385,363.56 = 156,741.68/x
  3. Step 3: Cross multiply
    279,260.79x = 385,363.56 × 156,741.68
  4. Step 4: Simplify right side
    279,260.79x = 60,402,531,805.18
  5. Step 5: Solve for x
    x = 60,402,531,805.18/279,260.79
  6. Step 6: Final answer
    x = 216,294.35

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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.