Home / 215,612.65-323,061.43-131,117.22

Finding the Fourth Proportional to 215,612.65, 323,061.43 and 131,117.22

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Solution

The fourth proportional to 215,612.65, 323,061.43 and 131,117.22 is: 196,458.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,612.65 : 323,061.43 = 131,117.22 : x
  2. Step 2: Convert to fraction form
    215,612.65/323,061.43 = 131,117.22/x
  3. Step 3: Cross multiply
    215,612.65x = 323,061.43 × 131,117.22
  4. Step 4: Simplify right side
    215,612.65x = 42,358,916,590.82
  5. Step 5: Solve for x
    x = 42,358,916,590.82/215,612.65
  6. Step 6: Final answer
    x = 196,458.40

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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.