Home / 387,842.85-581,764.14-121,623.80

Finding the Fourth Proportional to 387,842.85, 581,764.14 and 121,623.80

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Solution

The fourth proportional to 387,842.85, 581,764.14 and 121,623.80 is: 182,435.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,842.85 : 581,764.14 = 121,623.80 : x
  2. Step 2: Convert to fraction form
    387,842.85/581,764.14 = 121,623.80/x
  3. Step 3: Cross multiply
    387,842.85x = 581,764.14 × 121,623.80
  4. Step 4: Simplify right side
    387,842.85x = 70,756,362,501.71
  5. Step 5: Solve for x
    x = 70,756,362,501.71/387,842.85
  6. Step 6: Final answer
    x = 182,435.65

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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.