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Finding the Fourth Proportional to 368,375.42, 508,387.60 and 207,220.85

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Solution

The fourth proportional to 368,375.42, 508,387.60 and 207,220.85 is: 285,981.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,375.42 : 508,387.60 = 207,220.85 : x
  2. Step 2: Convert to fraction form
    368,375.42/508,387.60 = 207,220.85/x
  3. Step 3: Cross multiply
    368,375.42x = 508,387.60 × 207,220.85
  4. Step 4: Simplify right side
    368,375.42x = 105,348,510,601.46
  5. Step 5: Solve for x
    x = 105,348,510,601.46/368,375.42
  6. Step 6: Final answer
    x = 285,981.38

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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.