Home / 387,821.20-581,730.72-121,582.84

Finding the Fourth Proportional to 387,821.20, 581,730.72 and 121,582.84

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Solution

The fourth proportional to 387,821.20, 581,730.72 and 121,582.84 is: 182,373.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,821.20 : 581,730.72 = 121,582.84 : x
  2. Step 2: Convert to fraction form
    387,821.20/581,730.72 = 121,582.84/x
  3. Step 3: Cross multiply
    387,821.20x = 581,730.72 × 121,582.84
  4. Step 4: Simplify right side
    387,821.20x = 70,728,473,052.84
  5. Step 5: Solve for x
    x = 70,728,473,052.84/387,821.20
  6. Step 6: Final answer
    x = 182,373.92

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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.