Home / 398,280.20-596,729.10-257,966.60

Finding the Fourth Proportional to 398,280.20, 596,729.10 and 257,966.60

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Solution

The fourth proportional to 398,280.20, 596,729.10 and 257,966.60 is: 386,502.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,280.20 : 596,729.10 = 257,966.60 : x
  2. Step 2: Convert to fraction form
    398,280.20/596,729.10 = 257,966.60/x
  3. Step 3: Cross multiply
    398,280.20x = 596,729.10 × 257,966.60
  4. Step 4: Simplify right side
    398,280.20x = 153,936,177,048.06
  5. Step 5: Solve for x
    x = 153,936,177,048.06/398,280.20
  6. Step 6: Final answer
    x = 386,502.21

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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.