Home / 387,624.86-581,437.30-121,406.22

Finding the Fourth Proportional to 387,624.86, 581,437.30 and 121,406.22

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Solution

The fourth proportional to 387,624.86, 581,437.30 and 121,406.22 is: 182,109.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,624.86 : 581,437.30 = 121,406.22 : x
  2. Step 2: Convert to fraction form
    387,624.86/581,437.30 = 121,406.22/x
  3. Step 3: Cross multiply
    387,624.86x = 581,437.30 × 121,406.22
  4. Step 4: Simplify right side
    387,624.86x = 70,590,104,760.01
  5. Step 5: Solve for x
    x = 70,590,104,760.01/387,624.86
  6. Step 6: Final answer
    x = 182,109.33

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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.