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Finding the Fourth Proportional to 314,769.90, 472,015.96 and 90,079.19

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Solution

The fourth proportional to 314,769.90, 472,015.96 and 90,079.19 is: 135,079.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    314,769.90 : 472,015.96 = 90,079.19 : x
  2. Step 2: Convert to fraction form
    314,769.90/472,015.96 = 90,079.19/x
  3. Step 3: Cross multiply
    314,769.90x = 472,015.96 × 90,079.19
  4. Step 4: Simplify right side
    314,769.90x = 42,518,814,528.65
  5. Step 5: Solve for x
    x = 42,518,814,528.65/314,769.90
  6. Step 6: Final answer
    x = 135,079.04

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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.