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Finding the Fourth Proportional to 268,719.17, 403,079.05 and 69,041.21

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Solution

The fourth proportional to 268,719.17, 403,079.05 and 69,041.21 is: 103,561.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,719.17 : 403,079.05 = 69,041.21 : x
  2. Step 2: Convert to fraction form
    268,719.17/403,079.05 = 69,041.21/x
  3. Step 3: Cross multiply
    268,719.17x = 403,079.05 × 69,041.21
  4. Step 4: Simplify right side
    268,719.17x = 27,829,063,322.26
  5. Step 5: Solve for x
    x = 27,829,063,322.26/268,719.17
  6. Step 6: Final answer
    x = 103,561.89

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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.