Home / 287,431.63-396,656.37-172,712.19

Finding the Fourth Proportional to 287,431.63, 396,656.37 and 172,712.19

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Solution

The fourth proportional to 287,431.63, 396,656.37 and 172,712.19 is: 238,343.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,431.63 : 396,656.37 = 172,712.19 : x
  2. Step 2: Convert to fraction form
    287,431.63/396,656.37 = 172,712.19/x
  3. Step 3: Cross multiply
    287,431.63x = 396,656.37 × 172,712.19
  4. Step 4: Simplify right side
    287,431.63x = 68,507,390,340.15
  5. Step 5: Solve for x
    x = 68,507,390,340.15/287,431.63
  6. Step 6: Final answer
    x = 238,343.26

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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.