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Finding the Fourth Proportional to 215,763.65, 297,631.89 and 135,051.05

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Solution

The fourth proportional to 215,763.65, 297,631.89 and 135,051.05 is: 186,294.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,763.65 : 297,631.89 = 135,051.05 : x
  2. Step 2: Convert to fraction form
    215,763.65/297,631.89 = 135,051.05/x
  3. Step 3: Cross multiply
    215,763.65x = 297,631.89 × 135,051.05
  4. Step 4: Simplify right side
    215,763.65x = 40,195,497,769.83
  5. Step 5: Solve for x
    x = 40,195,497,769.83/215,763.65
  6. Step 6: Final answer
    x = 186,294.12

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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.