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Finding the Fourth Proportional to 279,950.85, 386,337.99 and 157,445.58

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Solution

The fourth proportional to 279,950.85, 386,337.99 and 157,445.58 is: 217,278.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,950.85 : 386,337.99 = 157,445.58 : x
  2. Step 2: Convert to fraction form
    279,950.85/386,337.99 = 157,445.58/x
  3. Step 3: Cross multiply
    279,950.85x = 386,337.99 × 157,445.58
  4. Step 4: Simplify right side
    279,950.85x = 60,827,208,911.58
  5. Step 5: Solve for x
    x = 60,827,208,911.58/279,950.85
  6. Step 6: Final answer
    x = 217,278.17

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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.