Home / 279,756.13-420,000.03-166,111.45

Finding the Fourth Proportional to 279,756.13, 420,000.03 and 166,111.45

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Solution

The fourth proportional to 279,756.13, 420,000.03 and 166,111.45 is: 249,384.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,756.13 : 420,000.03 = 166,111.45 : x
  2. Step 2: Convert to fraction form
    279,756.13/420,000.03 = 166,111.45/x
  3. Step 3: Cross multiply
    279,756.13x = 420,000.03 × 166,111.45
  4. Step 4: Simplify right side
    279,756.13x = 69,766,813,983.34
  5. Step 5: Solve for x
    x = 69,766,813,983.34/279,756.13
  6. Step 6: Final answer
    x = 249,384.40

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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.