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Finding the Fourth Proportional to 370,800, 555,870.11 and 134,090.06

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Solution

The fourth proportional to 370,800, 555,870.11 and 134,090.06 is: 201,015.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,800 : 555,870.11 = 134,090.06 : x
  2. Step 2: Convert to fraction form
    370,800/555,870.11 = 134,090.06/x
  3. Step 3: Cross multiply
    370,800x = 555,870.11 × 134,090.06
  4. Step 4: Simplify right side
    370,800x = 74,536,652,952.31
  5. Step 5: Solve for x
    x = 74,536,652,952.31/370,800
  6. Step 6: Final answer
    x = 201,015.78

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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.