Home / 387,779.46-581,669.19-121,560.54

Finding the Fourth Proportional to 387,779.46, 581,669.19 and 121,560.54

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Solution

The fourth proportional to 387,779.46, 581,669.19 and 121,560.54 is: 182,340.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,779.46 : 581,669.19 = 121,560.54 : x
  2. Step 2: Convert to fraction form
    387,779.46/581,669.19 = 121,560.54/x
  3. Step 3: Cross multiply
    387,779.46x = 581,669.19 × 121,560.54
  4. Step 4: Simplify right side
    387,779.46x = 70,708,020,837.76
  5. Step 5: Solve for x
    x = 70,708,020,837.76/387,779.46
  6. Step 6: Final answer
    x = 182,340.81

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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.