Home / 282,112.95-389,312.82-154,788.51

Finding the Fourth Proportional to 282,112.95, 389,312.82 and 154,788.51

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Solution

The fourth proportional to 282,112.95, 389,312.82 and 154,788.51 is: 213,606.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,112.95 : 389,312.82 = 154,788.51 : x
  2. Step 2: Convert to fraction form
    282,112.95/389,312.82 = 154,788.51/x
  3. Step 3: Cross multiply
    282,112.95x = 389,312.82 × 154,788.51
  4. Step 4: Simplify right side
    282,112.95x = 60,261,151,331.70
  5. Step 5: Solve for x
    x = 60,261,151,331.70/282,112.95
  6. Step 6: Final answer
    x = 213,606.47

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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.