Home / 287,540.10-430,986.15-137,852.10

Finding the Fourth Proportional to 287,540.10, 430,986.15 and 137,852.10

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Solution

The fourth proportional to 287,540.10, 430,986.15 and 137,852.10 is: 206,622.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,540.10 : 430,986.15 = 137,852.10 : x
  2. Step 2: Convert to fraction form
    287,540.10/430,986.15 = 137,852.10/x
  3. Step 3: Cross multiply
    287,540.10x = 430,986.15 × 137,852.10
  4. Step 4: Simplify right side
    287,540.10x = 59,412,345,848.42
  5. Step 5: Solve for x
    x = 59,412,345,848.42/287,540.10
  6. Step 6: Final answer
    x = 206,622.82

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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.