Home / 259,319.76-388,945.08-72,350.16

Finding the Fourth Proportional to 259,319.76, 388,945.08 and 72,350.16

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Solution

The fourth proportional to 259,319.76, 388,945.08 and 72,350.16 is: 108,515.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,319.76 : 388,945.08 = 72,350.16 : x
  2. Step 2: Convert to fraction form
    259,319.76/388,945.08 = 72,350.16/x
  3. Step 3: Cross multiply
    259,319.76x = 388,945.08 × 72,350.16
  4. Step 4: Simplify right side
    259,319.76x = 28,140,238,769.21
  5. Step 5: Solve for x
    x = 28,140,238,769.21/259,319.76
  6. Step 6: Final answer
    x = 108,515.60

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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.