Home / 387,459.14-580,875.21-121,082.54

Finding the Fourth Proportional to 387,459.14, 580,875.21 and 121,082.54

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Solution

The fourth proportional to 387,459.14, 580,875.21 and 121,082.54 is: 181,525.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,459.14 : 580,875.21 = 121,082.54 : x
  2. Step 2: Convert to fraction form
    387,459.14/580,875.21 = 121,082.54/x
  3. Step 3: Cross multiply
    387,459.14x = 580,875.21 × 121,082.54
  4. Step 4: Simplify right side
    387,459.14x = 70,333,842,945.46
  5. Step 5: Solve for x
    x = 70,333,842,945.46/387,459.14
  6. Step 6: Final answer
    x = 181,525.83

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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.