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Finding the Fourth Proportional to 279,290.27, 385,354.99 and 158,403.71

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Solution

The fourth proportional to 279,290.27, 385,354.99 and 158,403.71 is: 218,559.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,290.27 : 385,354.99 = 158,403.71 : x
  2. Step 2: Convert to fraction form
    279,290.27/385,354.99 = 158,403.71/x
  3. Step 3: Cross multiply
    279,290.27x = 385,354.99 × 158,403.71
  4. Step 4: Simplify right side
    279,290.27x = 61,041,660,083.01
  5. Step 5: Solve for x
    x = 61,041,660,083.01/279,290.27
  6. Step 6: Final answer
    x = 218,559.92

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1.5x scale

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.