Home / 420,131.48-579,681.68-238,829.04

Finding the Fourth Proportional to 420,131.48, 579,681.68 and 238,829.04

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Solution

The fourth proportional to 420,131.48, 579,681.68 and 238,829.04 is: 329,527.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,131.48 : 579,681.68 = 238,829.04 : x
  2. Step 2: Convert to fraction form
    420,131.48/579,681.68 = 238,829.04/x
  3. Step 3: Cross multiply
    420,131.48x = 579,681.68 × 238,829.04
  4. Step 4: Simplify right side
    420,131.48x = 138,444,817,945.84
  5. Step 5: Solve for x
    x = 138,444,817,945.84/420,131.48
  6. Step 6: Final answer
    x = 329,527.37

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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.