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Finding the Fourth Proportional to 287,293.38, 430,940.06 and 90,301.38

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Solution

The fourth proportional to 287,293.38, 430,940.06 and 90,301.38 is: 135,452.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,293.38 : 430,940.06 = 90,301.38 : x
  2. Step 2: Convert to fraction form
    287,293.38/430,940.06 = 90,301.38/x
  3. Step 3: Cross multiply
    287,293.38x = 430,940.06 × 90,301.38
  4. Step 4: Simplify right side
    287,293.38x = 38,914,482,115.28
  5. Step 5: Solve for x
    x = 38,914,482,115.28/287,293.38
  6. Step 6: Final answer
    x = 135,452.07

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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.