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Finding the Fourth Proportional to 295,169.57, 442,710.21 and 81,915.00

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Solution

The fourth proportional to 295,169.57, 442,710.21 and 81,915.00 is: 122,860.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    295,169.57 : 442,710.21 = 81,915.00 : x
  2. Step 2: Convert to fraction form
    295,169.57/442,710.21 = 81,915.00/x
  3. Step 3: Cross multiply
    295,169.57x = 442,710.21 × 81,915.00
  4. Step 4: Simplify right side
    295,169.57x = 36,264,605,038.40
  5. Step 5: Solve for x
    x = 36,264,605,038.40/295,169.57
  6. Step 6: Final answer
    x = 122,860.24

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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.