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Finding the Fourth Proportional to 268,981.40, 403,326.30 and 111,031.40

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Solution

The fourth proportional to 268,981.40, 403,326.30 and 111,031.40 is: 166,486.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,981.40 : 403,326.30 = 111,031.40 : x
  2. Step 2: Convert to fraction form
    268,981.40/403,326.30 = 111,031.40/x
  3. Step 3: Cross multiply
    268,981.40x = 403,326.30 × 111,031.40
  4. Step 4: Simplify right side
    268,981.40x = 44,781,883,745.82
  5. Step 5: Solve for x
    x = 44,781,883,745.82/268,981.40
  6. Step 6: Final answer
    x = 166,486.92

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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.