Home / 387,914.34-581,872.18-121,695.82

Finding the Fourth Proportional to 387,914.34, 581,872.18 and 121,695.82

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Solution

The fourth proportional to 387,914.34, 581,872.18 and 121,695.82 is: 182,543.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,914.34 : 581,872.18 = 121,695.82 : x
  2. Step 2: Convert to fraction form
    387,914.34/581,872.18 = 121,695.82/x
  3. Step 3: Cross multiply
    387,914.34x = 581,872.18 × 121,695.82
  4. Step 4: Simplify right side
    387,914.34x = 70,811,412,080.29
  5. Step 5: Solve for x
    x = 70,811,412,080.29/387,914.34
  6. Step 6: Final answer
    x = 182,543.94

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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.