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Finding the Fourth Proportional to 268,886.40, 403,005.60 and 156,350.40

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Solution

The fourth proportional to 268,886.40, 403,005.60 and 156,350.40 is: 234,337.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,886.40 : 403,005.60 = 156,350.40 : x
  2. Step 2: Convert to fraction form
    268,886.40/403,005.60 = 156,350.40/x
  3. Step 3: Cross multiply
    268,886.40x = 403,005.60 × 156,350.40
  4. Step 4: Simplify right side
    268,886.40x = 63,010,086,762.24
  5. Step 5: Solve for x
    x = 63,010,086,762.24/268,886.40
  6. Step 6: Final answer
    x = 234,337.20

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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.