Home / 387,727.40-581,618.74-103,416.33

Finding the Fourth Proportional to 387,727.40, 581,618.74 and 103,416.33

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Solution

The fourth proportional to 387,727.40, 581,618.74 and 103,416.33 is: 155,131.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,727.40 : 581,618.74 = 103,416.33 : x
  2. Step 2: Convert to fraction form
    387,727.40/581,618.74 = 103,416.33/x
  3. Step 3: Cross multiply
    387,727.40x = 581,618.74 × 103,416.33
  4. Step 4: Simplify right side
    387,727.40x = 60,148,875,291.48
  5. Step 5: Solve for x
    x = 60,148,875,291.48/387,727.40
  6. Step 6: Final answer
    x = 155,131.87

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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.