Home / 421,140.71-581,174.24-239,869.52

Finding the Fourth Proportional to 421,140.71, 581,174.24 and 239,869.52

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Solution

The fourth proportional to 421,140.71, 581,174.24 and 239,869.52 is: 331,019.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,140.71 : 581,174.24 = 239,869.52 : x
  2. Step 2: Convert to fraction form
    421,140.71/581,174.24 = 239,869.52/x
  3. Step 3: Cross multiply
    421,140.71x = 581,174.24 × 239,869.52
  4. Step 4: Simplify right side
    421,140.71x = 139,405,983,079.29
  5. Step 5: Solve for x
    x = 139,405,983,079.29/421,140.71
  6. Step 6: Final answer
    x = 331,019.97

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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.