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Finding the Fourth Proportional to 254,070.64, 381,135.12 and 85,533.13

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Solution

The fourth proportional to 254,070.64, 381,135.12 and 85,533.13 is: 128,309.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,070.64 : 381,135.12 = 85,533.13 : x
  2. Step 2: Convert to fraction form
    254,070.64/381,135.12 = 85,533.13/x
  3. Step 3: Cross multiply
    254,070.64x = 381,135.12 × 85,533.13
  4. Step 4: Simplify right side
    254,070.64x = 32,599,680,403.32
  5. Step 5: Solve for x
    x = 32,599,680,403.32/254,070.64
  6. Step 6: Final answer
    x = 128,309.51

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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.