Home / 287,434.63-396,660.51-172,715.19

Finding the Fourth Proportional to 287,434.63, 396,660.51 and 172,715.19

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Solution

The fourth proportional to 287,434.63, 396,660.51 and 172,715.19 is: 238,347.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,434.63 : 396,660.51 = 172,715.19 : x
  2. Step 2: Convert to fraction form
    287,434.63/396,660.51 = 172,715.19/x
  3. Step 3: Cross multiply
    287,434.63x = 396,660.51 × 172,715.19
  4. Step 4: Simplify right side
    287,434.63x = 68,509,295,350.15
  5. Step 5: Solve for x
    x = 68,509,295,350.15/287,434.63
  6. Step 6: Final answer
    x = 238,347.40

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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.