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Finding the Fourth Proportional to 486,230.40, 729,345.60 and 170,719.20

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Solution

The fourth proportional to 486,230.40, 729,345.60 and 170,719.20 is: 256,078.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,230.40 : 729,345.60 = 170,719.20 : x
  2. Step 2: Convert to fraction form
    486,230.40/729,345.60 = 170,719.20/x
  3. Step 3: Cross multiply
    486,230.40x = 729,345.60 × 170,719.20
  4. Step 4: Simplify right side
    486,230.40x = 124,513,297,355.52
  5. Step 5: Solve for x
    x = 124,513,297,355.52/486,230.40
  6. Step 6: Final answer
    x = 256,078.80

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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.