Home / 387,780.56-581,981.92-200,845.52

Finding the Fourth Proportional to 387,780.56, 581,981.92 and 200,845.52

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Solution

The fourth proportional to 387,780.56, 581,981.92 and 200,845.52 is: 301,429.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,780.56 : 581,981.92 = 200,845.52 : x
  2. Step 2: Convert to fraction form
    387,780.56/581,981.92 = 200,845.52/x
  3. Step 3: Cross multiply
    387,780.56x = 581,981.92 × 200,845.52
  4. Step 4: Simplify right side
    387,780.56x = 116,888,461,353.00
  5. Step 5: Solve for x
    x = 116,888,461,353.00/387,780.56
  6. Step 6: Final answer
    x = 301,429.40

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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.