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Finding the Fourth Proportional to 257,368.95, 386,104.46 and 79,868.39

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Solution

The fourth proportional to 257,368.95, 386,104.46 and 79,868.39 is: 119,818.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,368.95 : 386,104.46 = 79,868.39 : x
  2. Step 2: Convert to fraction form
    257,368.95/386,104.46 = 79,868.39/x
  3. Step 3: Cross multiply
    257,368.95x = 386,104.46 × 79,868.39
  4. Step 4: Simplify right side
    257,368.95x = 30,837,539,262.16
  5. Step 5: Solve for x
    x = 30,837,539,262.16/257,368.95
  6. Step 6: Final answer
    x = 119,818.41

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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.