Home / 421,127.30-581,155.90-230,140.68

Finding the Fourth Proportional to 421,127.30, 581,155.90 and 230,140.68

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Solution

The fourth proportional to 421,127.30, 581,155.90 and 230,140.68 is: 317,594.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,127.30 : 581,155.90 = 230,140.68 : x
  2. Step 2: Convert to fraction form
    421,127.30/581,155.90 = 230,140.68/x
  3. Step 3: Cross multiply
    421,127.30x = 581,155.90 × 230,140.68
  4. Step 4: Simplify right side
    421,127.30x = 133,747,611,257.33
  5. Step 5: Solve for x
    x = 133,747,611,257.33/421,127.30
  6. Step 6: Final answer
    x = 317,594.25

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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.