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Finding the Fourth Proportional to 422,759.80, 583,445.28 and 231,810.40

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Solution

The fourth proportional to 422,759.80, 583,445.28 and 231,810.40 is: 319,918.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,759.80 : 583,445.28 = 231,810.40 : x
  2. Step 2: Convert to fraction form
    422,759.80/583,445.28 = 231,810.40/x
  3. Step 3: Cross multiply
    422,759.80x = 583,445.28 × 231,810.40
  4. Step 4: Simplify right side
    422,759.80x = 135,248,683,734.91
  5. Step 5: Solve for x
    x = 135,248,683,734.91/422,759.80
  6. Step 6: Final answer
    x = 319,918.51

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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.