Home / 287,127.48-430,759.38-90,135.48

Finding the Fourth Proportional to 287,127.48, 430,759.38 and 90,135.48

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Solution

The fourth proportional to 287,127.48, 430,759.38 and 90,135.48 is: 135,224.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,127.48 : 430,759.38 = 90,135.48 : x
  2. Step 2: Convert to fraction form
    287,127.48/430,759.38 = 90,135.48/x
  3. Step 3: Cross multiply
    287,127.48x = 430,759.38 × 90,135.48
  4. Step 4: Simplify right side
    287,127.48x = 38,826,703,480.80
  5. Step 5: Solve for x
    x = 38,826,703,480.80/287,127.48
  6. Step 6: Final answer
    x = 135,224.62

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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.