Home / 458,012.20-687,080.70-158,412.40

Finding the Fourth Proportional to 458,012.20, 687,080.70 and 158,412.40

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Solution

The fourth proportional to 458,012.20, 687,080.70 and 158,412.40 is: 237,640.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,012.20 : 687,080.70 = 158,412.40 : x
  2. Step 2: Convert to fraction form
    458,012.20/687,080.70 = 158,412.40/x
  3. Step 3: Cross multiply
    458,012.20x = 687,080.70 × 158,412.40
  4. Step 4: Simplify right side
    458,012.20x = 108,842,102,680.68
  5. Step 5: Solve for x
    x = 108,842,102,680.68/458,012.20
  6. Step 6: Final answer
    x = 237,640.18

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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.