Home / 282,112.45-389,312.13-154,788.01

Finding the Fourth Proportional to 282,112.45, 389,312.13 and 154,788.01

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Solution

The fourth proportional to 282,112.45, 389,312.13 and 154,788.01 is: 213,605.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,112.45 : 389,312.13 = 154,788.01 : x
  2. Step 2: Convert to fraction form
    282,112.45/389,312.13 = 154,788.01/x
  3. Step 3: Cross multiply
    282,112.45x = 389,312.13 × 154,788.01
  4. Step 4: Simplify right side
    282,112.45x = 60,260,849,871.56
  5. Step 5: Solve for x
    x = 60,260,849,871.56/282,112.45
  6. Step 6: Final answer
    x = 213,605.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.