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Finding the Fourth Proportional to 268,943.94, 403,459.69 and 79,423.47

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Solution

The fourth proportional to 268,943.94, 403,459.69 and 79,423.47 is: 119,148.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,943.94 : 403,459.69 = 79,423.47 : x
  2. Step 2: Convert to fraction form
    268,943.94/403,459.69 = 79,423.47/x
  3. Step 3: Cross multiply
    268,943.94x = 403,459.69 × 79,423.47
  4. Step 4: Simplify right side
    268,943.94x = 32,044,168,584.92
  5. Step 5: Solve for x
    x = 32,044,168,584.92/268,943.94
  6. Step 6: Final answer
    x = 119,148.13

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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.