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Finding the Fourth Proportional to 292,280.40, 439,076.70 and 281,126.70

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Solution

The fourth proportional to 292,280.40, 439,076.70 and 281,126.70 is: 422,321.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,280.40 : 439,076.70 = 281,126.70 : x
  2. Step 2: Convert to fraction form
    292,280.40/439,076.70 = 281,126.70/x
  3. Step 3: Cross multiply
    292,280.40x = 439,076.70 × 281,126.70
  4. Step 4: Simplify right side
    292,280.40x = 123,436,183,717.89
  5. Step 5: Solve for x
    x = 123,436,183,717.89/292,280.40
  6. Step 6: Final answer
    x = 422,321.11

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1.5x scale

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.