Home / 259,030.31-388,526.49-81,588.06

Finding the Fourth Proportional to 259,030.31, 388,526.49 and 81,588.06

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Solution

The fourth proportional to 259,030.31, 388,526.49 and 81,588.06 is: 122,376.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,030.31 : 388,526.49 = 81,588.06 : x
  2. Step 2: Convert to fraction form
    259,030.31/388,526.49 = 81,588.06/x
  3. Step 3: Cross multiply
    259,030.31x = 388,526.49 × 81,588.06
  4. Step 4: Simplify right side
    259,030.31x = 31,699,122,577.71
  5. Step 5: Solve for x
    x = 31,699,122,577.71/259,030.31
  6. Step 6: Final answer
    x = 122,376.12

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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.