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Finding the Fourth Proportional to 256,043.40, 384,065.10 and 89,848.20

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Solution

The fourth proportional to 256,043.40, 384,065.10 and 89,848.20 is: 134,772.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,043.40 : 384,065.10 = 89,848.20 : x
  2. Step 2: Convert to fraction form
    256,043.40/384,065.10 = 89,848.20/x
  3. Step 3: Cross multiply
    256,043.40x = 384,065.10 × 89,848.20
  4. Step 4: Simplify right side
    256,043.40x = 34,507,557,917.82
  5. Step 5: Solve for x
    x = 34,507,557,917.82/256,043.40
  6. Step 6: Final answer
    x = 134,772.30

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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.