Home / 268,247.05-402,432.86-78,699.76

Finding the Fourth Proportional to 268,247.05, 402,432.86 and 78,699.76

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Solution

The fourth proportional to 268,247.05, 402,432.86 and 78,699.76 is: 118,067.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,247.05 : 402,432.86 = 78,699.76 : x
  2. Step 2: Convert to fraction form
    268,247.05/402,432.86 = 78,699.76/x
  3. Step 3: Cross multiply
    268,247.05x = 402,432.86 × 78,699.76
  4. Step 4: Simplify right side
    268,247.05x = 31,671,369,498.11
  5. Step 5: Solve for x
    x = 31,671,369,498.11/268,247.05
  6. Step 6: Final answer
    x = 118,067.91

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1.5x scale

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.