Home / 257,923.80-386,885.70-163,445.40

Finding the Fourth Proportional to 257,923.80, 386,885.70 and 163,445.40

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Solution

The fourth proportional to 257,923.80, 386,885.70 and 163,445.40 is: 245,168.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,923.80 : 386,885.70 = 163,445.40 : x
  2. Step 2: Convert to fraction form
    257,923.80/386,885.70 = 163,445.40/x
  3. Step 3: Cross multiply
    257,923.80x = 386,885.70 × 163,445.40
  4. Step 4: Simplify right side
    257,923.80x = 63,234,687,990.78
  5. Step 5: Solve for x
    x = 63,234,687,990.78/257,923.80
  6. Step 6: Final answer
    x = 245,168.10

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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.