Home / 268,255.08-402,444.86-78,707.79

Finding the Fourth Proportional to 268,255.08, 402,444.86 and 78,707.79

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Solution

The fourth proportional to 268,255.08, 402,444.86 and 78,707.79 is: 118,079.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,255.08 : 402,444.86 = 78,707.79 : x
  2. Step 2: Convert to fraction form
    268,255.08/402,444.86 = 78,707.79/x
  3. Step 3: Cross multiply
    268,255.08x = 402,444.86 × 78,707.79
  4. Step 4: Simplify right side
    268,255.08x = 31,675,545,133.92
  5. Step 5: Solve for x
    x = 31,675,545,133.92/268,255.08
  6. Step 6: Final answer
    x = 118,079.95

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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.