Home / 259,340.10-389,010.15-72,351.60

Finding the Fourth Proportional to 259,340.10, 389,010.15 and 72,351.60

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Solution

The fourth proportional to 259,340.10, 389,010.15 and 72,351.60 is: 108,527.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,340.10 : 389,010.15 = 72,351.60 : x
  2. Step 2: Convert to fraction form
    259,340.10/389,010.15 = 72,351.60/x
  3. Step 3: Cross multiply
    259,340.10x = 389,010.15 × 72,351.60
  4. Step 4: Simplify right side
    259,340.10x = 28,145,506,768.74
  5. Step 5: Solve for x
    x = 28,145,506,768.74/259,340.10
  6. Step 6: Final answer
    x = 108,527.40

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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.