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Finding the Fourth Proportional to 212,294.80, 292,969.15 and 115,499.20

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Solution

The fourth proportional to 212,294.80, 292,969.15 and 115,499.20 is: 159,390.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,294.80 : 292,969.15 = 115,499.20 : x
  2. Step 2: Convert to fraction form
    212,294.80/292,969.15 = 115,499.20/x
  3. Step 3: Cross multiply
    212,294.80x = 292,969.15 × 115,499.20
  4. Step 4: Simplify right side
    212,294.80x = 33,837,703,259.57
  5. Step 5: Solve for x
    x = 33,837,703,259.57/212,294.80
  6. Step 6: Final answer
    x = 159,390.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.