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Finding the Fourth Proportional to 170,811.70, 256,217.55 and 162,646.90

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Solution

The fourth proportional to 170,811.70, 256,217.55 and 162,646.90 is: 243,970.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,811.70 : 256,217.55 = 162,646.90 : x
  2. Step 2: Convert to fraction form
    170,811.70/256,217.55 = 162,646.90/x
  3. Step 3: Cross multiply
    170,811.70x = 256,217.55 × 162,646.90
  4. Step 4: Simplify right side
    170,811.70x = 41,672,990,233.10
  5. Step 5: Solve for x
    x = 41,672,990,233.10/170,811.70
  6. Step 6: Final answer
    x = 243,970.35

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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.