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Finding the Fourth Proportional to 268,301, 402,641.04 and 128,070.56

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Solution

The fourth proportional to 268,301, 402,641.04 and 128,070.56 is: 192,196.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,301 : 402,641.04 = 128,070.56 : x
  2. Step 2: Convert to fraction form
    268,301/402,641.04 = 128,070.56/x
  3. Step 3: Cross multiply
    268,301x = 402,641.04 × 128,070.56
  4. Step 4: Simplify right side
    268,301x = 51,566,463,471.78
  5. Step 5: Solve for x
    x = 51,566,463,471.78/268,301
  6. Step 6: Final answer
    x = 192,196.31

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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.