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Finding the Fourth Proportional to 268,427.52, 402,278.40 and 118,642.32

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Solution

The fourth proportional to 268,427.52, 402,278.40 and 118,642.32 is: 177,803.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,427.52 : 402,278.40 = 118,642.32 : x
  2. Step 2: Convert to fraction form
    268,427.52/402,278.40 = 118,642.32/x
  3. Step 3: Cross multiply
    268,427.52x = 402,278.40 × 118,642.32
  4. Step 4: Simplify right side
    268,427.52x = 47,727,242,661.89
  5. Step 5: Solve for x
    x = 47,727,242,661.89/268,427.52
  6. Step 6: Final answer
    x = 177,803.09

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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.