Home / 387,940.20-581,910.30-107,457.45

Finding the Fourth Proportional to 387,940.20, 581,910.30 and 107,457.45

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Solution

The fourth proportional to 387,940.20, 581,910.30 and 107,457.45 is: 161,186.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,940.20 : 581,910.30 = 107,457.45 : x
  2. Step 2: Convert to fraction form
    387,940.20/581,910.30 = 107,457.45/x
  3. Step 3: Cross multiply
    387,940.20x = 581,910.30 × 107,457.45
  4. Step 4: Simplify right side
    387,940.20x = 62,530,596,966.74
  5. Step 5: Solve for x
    x = 62,530,596,966.74/387,940.20
  6. Step 6: Final answer
    x = 161,186.18

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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.