Home / 287,129.22-430,868.10-107,345.54

Finding the Fourth Proportional to 287,129.22, 430,868.10 and 107,345.54

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Solution

The fourth proportional to 287,129.22, 430,868.10 and 107,345.54 is: 161,083.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,129.22 : 430,868.10 = 107,345.54 : x
  2. Step 2: Convert to fraction form
    287,129.22/430,868.10 = 107,345.54/x
  3. Step 3: Cross multiply
    287,129.22x = 430,868.10 × 107,345.54
  4. Step 4: Simplify right side
    287,129.22x = 46,251,768,863.27
  5. Step 5: Solve for x
    x = 46,251,768,863.27/287,129.22
  6. Step 6: Final answer
    x = 161,083.46

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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.