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Finding the Fourth Proportional to 407,248.12, 610,725.80 and 140,936.32

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Solution

The fourth proportional to 407,248.12, 610,725.80 and 140,936.32 is: 211,353.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,248.12 : 610,725.80 = 140,936.32 : x
  2. Step 2: Convert to fraction form
    407,248.12/610,725.80 = 140,936.32/x
  3. Step 3: Cross multiply
    407,248.12x = 610,725.80 × 140,936.32
  4. Step 4: Simplify right side
    407,248.12x = 86,073,446,781.06
  5. Step 5: Solve for x
    x = 86,073,446,781.06/407,248.12
  6. Step 6: Final answer
    x = 211,353.82

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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.