Home / 287,868.88-431,699.58-121,669.84

Finding the Fourth Proportional to 287,868.88, 431,699.58 and 121,669.84

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Solution

The fourth proportional to 287,868.88, 431,699.58 and 121,669.84 is: 182,460.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,868.88 : 431,699.58 = 121,669.84 : x
  2. Step 2: Convert to fraction form
    287,868.88/431,699.58 = 121,669.84/x
  3. Step 3: Cross multiply
    287,868.88x = 431,699.58 × 121,669.84
  4. Step 4: Simplify right side
    287,868.88x = 52,524,818,826.67
  5. Step 5: Solve for x
    x = 52,524,818,826.67/287,868.88
  6. Step 6: Final answer
    x = 182,460.91

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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.