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Finding the Fourth Proportional to 491,877.58, 738,030.79 and 172,258.73

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Solution

The fourth proportional to 491,877.58, 738,030.79 and 172,258.73 is: 258,463.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,877.58 : 738,030.79 = 172,258.73 : x
  2. Step 2: Convert to fraction form
    491,877.58/738,030.79 = 172,258.73/x
  3. Step 3: Cross multiply
    491,877.58x = 738,030.79 × 172,258.73
  4. Step 4: Simplify right side
    491,877.58x = 127,132,250,030.51
  5. Step 5: Solve for x
    x = 127,132,250,030.51/491,877.58
  6. Step 6: Final answer
    x = 258,463.19

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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.