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Finding the Fourth Proportional to 254,460.60, 381,690.90 and 143,868.60

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Solution

The fourth proportional to 254,460.60, 381,690.90 and 143,868.60 is: 215,802.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,460.60 : 381,690.90 = 143,868.60 : x
  2. Step 2: Convert to fraction form
    254,460.60/381,690.90 = 143,868.60/x
  3. Step 3: Cross multiply
    254,460.60x = 381,690.90 × 143,868.60
  4. Step 4: Simplify right side
    254,460.60x = 54,913,335,415.74
  5. Step 5: Solve for x
    x = 54,913,335,415.74/254,460.60
  6. Step 6: Final answer
    x = 215,802.90

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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.