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Finding the Fourth Proportional to 292,002.20, 438,003.30 and 290,033.90

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Solution

The fourth proportional to 292,002.20, 438,003.30 and 290,033.90 is: 435,050.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,002.20 : 438,003.30 = 290,033.90 : x
  2. Step 2: Convert to fraction form
    292,002.20/438,003.30 = 290,033.90/x
  3. Step 3: Cross multiply
    292,002.20x = 438,003.30 × 290,033.90
  4. Step 4: Simplify right side
    292,002.20x = 127,035,805,311.87
  5. Step 5: Solve for x
    x = 127,035,805,311.87/292,002.20
  6. Step 6: Final answer
    x = 435,050.85

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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.