Home / 421,487.09-581,656.77-230,496.38

Finding the Fourth Proportional to 421,487.09, 581,656.77 and 230,496.38

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Solution

The fourth proportional to 421,487.09, 581,656.77 and 230,496.38 is: 318,087.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,487.09 : 581,656.77 = 230,496.38 : x
  2. Step 2: Convert to fraction form
    421,487.09/581,656.77 = 230,496.38/x
  3. Step 3: Cross multiply
    421,487.09x = 581,656.77 × 230,496.38
  4. Step 4: Simplify right side
    421,487.09x = 134,069,776,979.21
  5. Step 5: Solve for x
    x = 134,069,776,979.21/421,487.09
  6. Step 6: Final answer
    x = 318,087.51

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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.