Home / 287,931.58-431,712.30-119,568.08

Finding the Fourth Proportional to 287,931.58, 431,712.30 and 119,568.08

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Solution

The fourth proportional to 287,931.58, 431,712.30 and 119,568.08 is: 179,275.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,931.58 : 431,712.30 = 119,568.08 : x
  2. Step 2: Convert to fraction form
    287,931.58/431,712.30 = 119,568.08/x
  3. Step 3: Cross multiply
    287,931.58x = 431,712.30 × 119,568.08
  4. Step 4: Simplify right side
    287,931.58x = 51,619,010,823.38
  5. Step 5: Solve for x
    x = 51,619,010,823.38/287,931.58
  6. Step 6: Final answer
    x = 179,275.27

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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.