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Finding the Fourth Proportional to 243,999.87, 336,712.90 and 142,023.15

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Solution

The fourth proportional to 243,999.87, 336,712.90 and 142,023.15 is: 195,987.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,999.87 : 336,712.90 = 142,023.15 : x
  2. Step 2: Convert to fraction form
    243,999.87/336,712.90 = 142,023.15/x
  3. Step 3: Cross multiply
    243,999.87x = 336,712.90 × 142,023.15
  4. Step 4: Simplify right side
    243,999.87x = 47,821,024,309.95
  5. Step 5: Solve for x
    x = 47,821,024,309.95/243,999.87
  6. Step 6: Final answer
    x = 195,987.91

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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.