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Finding the Fourth Proportional to 254,420.10, 381,630.15 and 77,051.70

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Solution

The fourth proportional to 254,420.10, 381,630.15 and 77,051.70 is: 115,577.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,420.10 : 381,630.15 = 77,051.70 : x
  2. Step 2: Convert to fraction form
    254,420.10/381,630.15 = 77,051.70/x
  3. Step 3: Cross multiply
    254,420.10x = 381,630.15 × 77,051.70
  4. Step 4: Simplify right side
    254,420.10x = 29,405,251,828.76
  5. Step 5: Solve for x
    x = 29,405,251,828.76/254,420.10
  6. Step 6: Final answer
    x = 115,577.55

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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.