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Finding the Fourth Proportional to 268,597.18, 402,851.97 and 79,013.20

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Solution

The fourth proportional to 268,597.18, 402,851.97 and 79,013.20 is: 118,506.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,597.18 : 402,851.97 = 79,013.20 : x
  2. Step 2: Convert to fraction form
    268,597.18/402,851.97 = 79,013.20/x
  3. Step 3: Cross multiply
    268,597.18x = 402,851.97 × 79,013.20
  4. Step 4: Simplify right side
    268,597.18x = 31,830,623,276.00
  5. Step 5: Solve for x
    x = 31,830,623,276.00/268,597.18
  6. Step 6: Final answer
    x = 118,506.92

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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.