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Finding the Fourth Proportional to 212,481.53, 318,756.13 and 70,332.00

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Solution

The fourth proportional to 212,481.53, 318,756.13 and 70,332.00 is: 105,509.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,481.53 : 318,756.13 = 70,332.00 : x
  2. Step 2: Convert to fraction form
    212,481.53/318,756.13 = 70,332.00/x
  3. Step 3: Cross multiply
    212,481.53x = 318,756.13 × 70,332.00
  4. Step 4: Simplify right side
    212,481.53x = 22,418,754,763.99
  5. Step 5: Solve for x
    x = 22,418,754,763.99/212,481.53
  6. Step 6: Final answer
    x = 105,509.19

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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.