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Finding the Fourth Proportional to 369,079.12, 509,375.55 and 207,972.55

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Solution

The fourth proportional to 369,079.12, 509,375.55 and 207,972.55 is: 287,028.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,079.12 : 509,375.55 = 207,972.55 : x
  2. Step 2: Convert to fraction form
    369,079.12/509,375.55 = 207,972.55/x
  3. Step 3: Cross multiply
    369,079.12x = 509,375.55 × 207,972.55
  4. Step 4: Simplify right side
    369,079.12x = 105,936,132,041.15
  5. Step 5: Solve for x
    x = 105,936,132,041.15/369,079.12
  6. Step 6: Final answer
    x = 287,028.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.