Home / 387,721.88-581,610.46-103,410.81

Finding the Fourth Proportional to 387,721.88, 581,610.46 and 103,410.81

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Solution

The fourth proportional to 387,721.88, 581,610.46 and 103,410.81 is: 155,123.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,721.88 : 581,610.46 = 103,410.81 : x
  2. Step 2: Convert to fraction form
    387,721.88/581,610.46 = 103,410.81/x
  3. Step 3: Cross multiply
    387,721.88x = 581,610.46 × 103,410.81
  4. Step 4: Simplify right side
    387,721.88x = 60,144,808,773.07
  5. Step 5: Solve for x
    x = 60,144,808,773.07/387,721.88
  6. Step 6: Final answer
    x = 155,123.59

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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.