Home / 387,340.48-581,011.18-121,102.39

Finding the Fourth Proportional to 387,340.48, 581,011.18 and 121,102.39

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Solution

The fourth proportional to 387,340.48, 581,011.18 and 121,102.39 is: 181,653.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,340.48 : 581,011.18 = 121,102.39 : x
  2. Step 2: Convert to fraction form
    387,340.48/581,011.18 = 121,102.39/x
  3. Step 3: Cross multiply
    387,340.48x = 581,011.18 × 121,102.39
  4. Step 4: Simplify right side
    387,340.48x = 70,361,842,938.23
  5. Step 5: Solve for x
    x = 70,361,842,938.23/387,340.48
  6. Step 6: Final answer
    x = 181,653.73

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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.