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Finding the Fourth Proportional to 297,866.40, 447,721.20 and 292,336.80

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Solution

The fourth proportional to 297,866.40, 447,721.20 and 292,336.80 is: 439,409.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,866.40 : 447,721.20 = 292,336.80 : x
  2. Step 2: Convert to fraction form
    297,866.40/447,721.20 = 292,336.80/x
  3. Step 3: Cross multiply
    297,866.40x = 447,721.20 × 292,336.80
  4. Step 4: Simplify right side
    297,866.40x = 130,885,382,900.16
  5. Step 5: Solve for x
    x = 130,885,382,900.16/297,866.40
  6. Step 6: Final answer
    x = 439,409.69

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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.