Home / 421,720.96-581,988.90-230,734.44

Finding the Fourth Proportional to 421,720.96, 581,988.90 and 230,734.44

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Solution

The fourth proportional to 421,720.96, 581,988.90 and 230,734.44 is: 318,421.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,720.96 : 581,988.90 = 230,734.44 : x
  2. Step 2: Convert to fraction form
    421,720.96/581,988.90 = 230,734.44/x
  3. Step 3: Cross multiply
    421,720.96x = 581,988.90 × 230,734.44
  4. Step 4: Simplify right side
    421,720.96x = 134,284,882,927.72
  5. Step 5: Solve for x
    x = 134,284,882,927.72/421,720.96
  6. Step 6: Final answer
    x = 318,421.17

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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.