Home / 421,716.78-581,968.80-230,730.93

Finding the Fourth Proportional to 421,716.78, 581,968.80 and 230,730.93

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Solution

The fourth proportional to 421,716.78, 581,968.80 and 230,730.93 is: 318,408.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,716.78 : 581,968.80 = 230,730.93 : x
  2. Step 2: Convert to fraction form
    421,716.78/581,968.80 = 230,730.93/x
  3. Step 3: Cross multiply
    421,716.78x = 581,968.80 × 230,730.93
  4. Step 4: Simplify right side
    421,716.78x = 134,278,202,454.98
  5. Step 5: Solve for x
    x = 134,278,202,454.98/421,716.78
  6. Step 6: Final answer
    x = 318,408.49

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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.