Home / 387,740.39-581,610.79-121,521.64

Finding the Fourth Proportional to 387,740.39, 581,610.79 and 121,521.64

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Solution

The fourth proportional to 387,740.39, 581,610.79 and 121,521.64 is: 182,282.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,740.39 : 581,610.79 = 121,521.64 : x
  2. Step 2: Convert to fraction form
    387,740.39/581,610.79 = 121,521.64/x
  3. Step 3: Cross multiply
    387,740.39x = 581,610.79 × 121,521.64
  4. Step 4: Simplify right side
    387,740.39x = 70,678,293,526.83
  5. Step 5: Solve for x
    x = 70,678,293,526.83/387,740.39
  6. Step 6: Final answer
    x = 182,282.52

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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.