Home / 257,974.80-386,962.20-163,496.40

Finding the Fourth Proportional to 257,974.80, 386,962.20 and 163,496.40

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Solution

The fourth proportional to 257,974.80, 386,962.20 and 163,496.40 is: 245,244.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,974.80 : 386,962.20 = 163,496.40 : x
  2. Step 2: Convert to fraction form
    257,974.80/386,962.20 = 163,496.40/x
  3. Step 3: Cross multiply
    257,974.80x = 386,962.20 × 163,496.40
  4. Step 4: Simplify right side
    257,974.80x = 63,266,926,636.08
  5. Step 5: Solve for x
    x = 63,266,926,636.08/257,974.80
  6. Step 6: Final answer
    x = 245,244.60

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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.