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Finding the Fourth Proportional to 491,438.60, 736,866.30 and 255,242.60

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Solution

The fourth proportional to 491,438.60, 736,866.30 and 255,242.60 is: 382,712.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,438.60 : 736,866.30 = 255,242.60 : x
  2. Step 2: Convert to fraction form
    491,438.60/736,866.30 = 255,242.60/x
  3. Step 3: Cross multiply
    491,438.60x = 736,866.30 × 255,242.60
  4. Step 4: Simplify right side
    491,438.60x = 188,079,670,264.38
  5. Step 5: Solve for x
    x = 188,079,670,264.38/491,438.60
  6. Step 6: Final answer
    x = 382,712.45

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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.