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Finding the Fourth Proportional to 257,999.60, 386,124.60 and 226,506.80

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Solution

The fourth proportional to 257,999.60, 386,124.60 and 226,506.80 is: 338,992.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,999.60 : 386,124.60 = 226,506.80 : x
  2. Step 2: Convert to fraction form
    257,999.60/386,124.60 = 226,506.80/x
  3. Step 3: Cross multiply
    257,999.60x = 386,124.60 × 226,506.80
  4. Step 4: Simplify right side
    257,999.60x = 87,459,847,547.28
  5. Step 5: Solve for x
    x = 87,459,847,547.28/257,999.60
  6. Step 6: Final answer
    x = 338,992.18

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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.