Home / 215,378.19-297,176.85-130,478.85

Finding the Fourth Proportional to 215,378.19, 297,176.85 and 130,478.85

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Solution

The fourth proportional to 215,378.19, 297,176.85 and 130,478.85 is: 180,033.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,378.19 : 297,176.85 = 130,478.85 : x
  2. Step 2: Convert to fraction form
    215,378.19/297,176.85 = 130,478.85/x
  3. Step 3: Cross multiply
    215,378.19x = 297,176.85 × 130,478.85
  4. Step 4: Simplify right side
    215,378.19x = 38,775,293,634.62
  5. Step 5: Solve for x
    x = 38,775,293,634.62/215,378.19
  6. Step 6: Final answer
    x = 180,033.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.