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Finding the Fourth Proportional to 491,970.40, 738,128.40 and 176,437.60

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Solution

The fourth proportional to 491,970.40, 738,128.40 and 176,437.60 is: 264,718.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,970.40 : 738,128.40 = 176,437.60 : x
  2. Step 2: Convert to fraction form
    491,970.40/738,128.40 = 176,437.60/x
  3. Step 3: Cross multiply
    491,970.40x = 738,128.40 × 176,437.60
  4. Step 4: Simplify right side
    491,970.40x = 130,233,603,387.84
  5. Step 5: Solve for x
    x = 130,233,603,387.84/491,970.40
  6. Step 6: Final answer
    x = 264,718.37

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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.