Home / 421,660.35-581,895.50-230,681.79

Finding the Fourth Proportional to 421,660.35, 581,895.50 and 230,681.79

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Solution

The fourth proportional to 421,660.35, 581,895.50 and 230,681.79 is: 318,343.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,660.35 : 581,895.50 = 230,681.79 : x
  2. Step 2: Convert to fraction form
    421,660.35/581,895.50 = 230,681.79/x
  3. Step 3: Cross multiply
    421,660.35x = 581,895.50 × 230,681.79
  4. Step 4: Simplify right side
    421,660.35x = 134,232,694,379.54
  5. Step 5: Solve for x
    x = 134,232,694,379.54/421,660.35
  6. Step 6: Final answer
    x = 318,343.17

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.