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Finding the Fourth Proportional to 202,960.55, 304,276.75 and 84,720.40

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Solution

The fourth proportional to 202,960.55, 304,276.75 and 84,720.40 is: 127,012.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,960.55 : 304,276.75 = 84,720.40 : x
  2. Step 2: Convert to fraction form
    202,960.55/304,276.75 = 84,720.40/x
  3. Step 3: Cross multiply
    202,960.55x = 304,276.75 × 84,720.40
  4. Step 4: Simplify right side
    202,960.55x = 25,778,447,970.70
  5. Step 5: Solve for x
    x = 25,778,447,970.70/202,960.55
  6. Step 6: Final answer
    x = 127,012.11

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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.