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Finding the Fourth Proportional to 279,317.57, 385,466.95 and 158,463.95

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Solution

The fourth proportional to 279,317.57, 385,466.95 and 158,463.95 is: 218,685.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,317.57 : 385,466.95 = 158,463.95 : x
  2. Step 2: Convert to fraction form
    279,317.57/385,466.95 = 158,463.95/x
  3. Step 3: Cross multiply
    279,317.57x = 385,466.95 × 158,463.95
  4. Step 4: Simplify right side
    279,317.57x = 61,082,613,762.20
  5. Step 5: Solve for x
    x = 61,082,613,762.20/279,317.57
  6. Step 6: Final answer
    x = 218,685.19

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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.