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Finding the Fourth Proportional to 325,116.70, 487,675.05 and 212,923.60

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Solution

The fourth proportional to 325,116.70, 487,675.05 and 212,923.60 is: 319,385.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,116.70 : 487,675.05 = 212,923.60 : x
  2. Step 2: Convert to fraction form
    325,116.70/487,675.05 = 212,923.60/x
  3. Step 3: Cross multiply
    325,116.70x = 487,675.05 × 212,923.60
  4. Step 4: Simplify right side
    325,116.70x = 103,837,527,276.18
  5. Step 5: Solve for x
    x = 103,837,527,276.18/325,116.70
  6. Step 6: Final answer
    x = 319,385.40

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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.