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Finding the Fourth Proportional to 257,595.20, 386,392.80 and 173,614.40

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Solution

The fourth proportional to 257,595.20, 386,392.80 and 173,614.40 is: 260,421.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,595.20 : 386,392.80 = 173,614.40 : x
  2. Step 2: Convert to fraction form
    257,595.20/386,392.80 = 173,614.40/x
  3. Step 3: Cross multiply
    257,595.20x = 386,392.80 × 173,614.40
  4. Step 4: Simplify right side
    257,595.20x = 67,083,354,136.32
  5. Step 5: Solve for x
    x = 67,083,354,136.32/257,595.20
  6. Step 6: Final answer
    x = 260,421.60

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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.