Home / 259,475.10-389,212.65-147,111.90

Finding the Fourth Proportional to 259,475.10, 389,212.65 and 147,111.90

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Solution

The fourth proportional to 259,475.10, 389,212.65 and 147,111.90 is: 220,667.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,475.10 : 389,212.65 = 147,111.90 : x
  2. Step 2: Convert to fraction form
    259,475.10/389,212.65 = 147,111.90/x
  3. Step 3: Cross multiply
    259,475.10x = 389,212.65 × 147,111.90
  4. Step 4: Simplify right side
    259,475.10x = 57,257,812,445.54
  5. Step 5: Solve for x
    x = 57,257,812,445.54/259,475.10
  6. Step 6: Final answer
    x = 220,667.85

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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.