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Finding the Fourth Proportional to 325,074.58, 487,436.54 and 147,484.70

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Solution

The fourth proportional to 325,074.58, 487,436.54 and 147,484.70 is: 221,147.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,074.58 : 487,436.54 = 147,484.70 : x
  2. Step 2: Convert to fraction form
    325,074.58/487,436.54 = 147,484.70/x
  3. Step 3: Cross multiply
    325,074.58x = 487,436.54 × 147,484.70
  4. Step 4: Simplify right side
    325,074.58x = 71,889,431,870.94
  5. Step 5: Solve for x
    x = 71,889,431,870.94/325,074.58
  6. Step 6: Final answer
    x = 221,147.50

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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.