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Finding the Fourth Proportional to 485,435.84, 728,157.40 and 148,482.52

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Solution

The fourth proportional to 485,435.84, 728,157.40 and 148,482.52 is: 222,724.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,435.84 : 728,157.40 = 148,482.52 : x
  2. Step 2: Convert to fraction form
    485,435.84/728,157.40 = 148,482.52/x
  3. Step 3: Cross multiply
    485,435.84x = 728,157.40 × 148,482.52
  4. Step 4: Simplify right side
    485,435.84x = 108,118,643,517.05
  5. Step 5: Solve for x
    x = 108,118,643,517.05/485,435.84
  6. Step 6: Final answer
    x = 222,724.89

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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.