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Finding the Fourth Proportional to 388,947.25, 583,420.89 and 93,459.25

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Solution

The fourth proportional to 388,947.25, 583,420.89 and 93,459.25 is: 140,188.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,947.25 : 583,420.89 = 93,459.25 : x
  2. Step 2: Convert to fraction form
    388,947.25/583,420.89 = 93,459.25/x
  3. Step 3: Cross multiply
    388,947.25x = 583,420.89 × 93,459.25
  4. Step 4: Simplify right side
    388,947.25x = 54,526,078,813.73
  5. Step 5: Solve for x
    x = 54,526,078,813.73/388,947.25
  6. Step 6: Final answer
    x = 140,188.88

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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.