Home / 421,289.88-581,389.20-230,303.16

Finding the Fourth Proportional to 421,289.88, 581,389.20 and 230,303.16

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Solution

The fourth proportional to 421,289.88, 581,389.20 and 230,303.16 is: 317,823.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,289.88 : 581,389.20 = 230,303.16 : x
  2. Step 2: Convert to fraction form
    421,289.88/581,389.20 = 230,303.16/x
  3. Step 3: Cross multiply
    421,289.88x = 581,389.20 × 230,303.16
  4. Step 4: Simplify right side
    421,289.88x = 133,895,769,949.87
  5. Step 5: Solve for x
    x = 133,895,769,949.87/421,289.88
  6. Step 6: Final answer
    x = 317,823.37

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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.