Home / 257,639.10-386,458.65-173,658.30

Finding the Fourth Proportional to 257,639.10, 386,458.65 and 173,658.30

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Solution

The fourth proportional to 257,639.10, 386,458.65 and 173,658.30 is: 260,487.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,639.10 : 386,458.65 = 173,658.30 : x
  2. Step 2: Convert to fraction form
    257,639.10/386,458.65 = 173,658.30/x
  3. Step 3: Cross multiply
    257,639.10x = 386,458.65 × 173,658.30
  4. Step 4: Simplify right side
    257,639.10x = 67,111,752,179.30
  5. Step 5: Solve for x
    x = 67,111,752,179.30/257,639.10
  6. Step 6: Final answer
    x = 260,487.45

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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.