Home / 279,758.13-420,003.03-166,113.45

Finding the Fourth Proportional to 279,758.13, 420,003.03 and 166,113.45

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Solution

The fourth proportional to 279,758.13, 420,003.03 and 166,113.45 is: 249,387.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,758.13 : 420,003.03 = 166,113.45 : x
  2. Step 2: Convert to fraction form
    279,758.13/420,003.03 = 166,113.45/x
  3. Step 3: Cross multiply
    279,758.13x = 420,003.03 × 166,113.45
  4. Step 4: Simplify right side
    279,758.13x = 69,768,152,323.75
  5. Step 5: Solve for x
    x = 69,768,152,323.75/279,758.13
  6. Step 6: Final answer
    x = 249,387.40

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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.