Home / 281,338.02-421,697.43-138,972.51

Finding the Fourth Proportional to 281,338.02, 421,697.43 and 138,972.51

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Solution

The fourth proportional to 281,338.02, 421,697.43 and 138,972.51 is: 208,305.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,338.02 : 421,697.43 = 138,972.51 : x
  2. Step 2: Convert to fraction form
    281,338.02/421,697.43 = 138,972.51/x
  3. Step 3: Cross multiply
    281,338.02x = 421,697.43 × 138,972.51
  4. Step 4: Simplify right side
    281,338.02x = 58,604,350,307.65
  5. Step 5: Solve for x
    x = 58,604,350,307.65/281,338.02
  6. Step 6: Final answer
    x = 208,305.83

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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.