Home / 215,738.06-297,689.65-130,838.72

Finding the Fourth Proportional to 215,738.06, 297,689.65 and 130,838.72

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Solution

The fourth proportional to 215,738.06, 297,689.65 and 130,838.72 is: 180,539.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,738.06 : 297,689.65 = 130,838.72 : x
  2. Step 2: Convert to fraction form
    215,738.06/297,689.65 = 130,838.72/x
  3. Step 3: Cross multiply
    215,738.06x = 297,689.65 × 130,838.72
  4. Step 4: Simplify right side
    215,738.06x = 38,949,330,947.70
  5. Step 5: Solve for x
    x = 38,949,330,947.70/215,738.06
  6. Step 6: Final answer
    x = 180,539.92

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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.