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Finding the Fourth Proportional to 268,502.40, 402,763.32 and 91,026.54

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Solution

The fourth proportional to 268,502.40, 402,763.32 and 91,026.54 is: 136,543.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,502.40 : 402,763.32 = 91,026.54 : x
  2. Step 2: Convert to fraction form
    268,502.40/402,763.32 = 91,026.54/x
  3. Step 3: Cross multiply
    268,502.40x = 402,763.32 × 91,026.54
  4. Step 4: Simplify right side
    268,502.40x = 36,662,151,458.51
  5. Step 5: Solve for x
    x = 36,662,151,458.51/268,502.40
  6. Step 6: Final answer
    x = 136,543.11

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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.