Home / 421,101.07-581,133.86-230,126.76

Finding the Fourth Proportional to 421,101.07, 581,133.86 and 230,126.76

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Solution

The fourth proportional to 421,101.07, 581,133.86 and 230,126.76 is: 317,582.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,101.07 : 581,133.86 = 230,126.76 : x
  2. Step 2: Convert to fraction form
    421,101.07/581,133.86 = 230,126.76/x
  3. Step 3: Cross multiply
    421,101.07x = 581,133.86 × 230,126.76
  4. Step 4: Simplify right side
    421,101.07x = 133,734,452,328.09
  5. Step 5: Solve for x
    x = 133,734,452,328.09/421,101.07
  6. Step 6: Final answer
    x = 317,582.79

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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.