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Finding the Fourth Proportional to 400,921.78, 601,452.15 and 134,708.26

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Solution

The fourth proportional to 400,921.78, 601,452.15 and 134,708.26 is: 202,085.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,921.78 : 601,452.15 = 134,708.26 : x
  2. Step 2: Convert to fraction form
    400,921.78/601,452.15 = 134,708.26/x
  3. Step 3: Cross multiply
    400,921.78x = 601,452.15 × 134,708.26
  4. Step 4: Simplify right side
    400,921.78x = 81,020,572,599.76
  5. Step 5: Solve for x
    x = 81,020,572,599.76/400,921.78
  6. Step 6: Final answer
    x = 202,085.74

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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.