Home / 421,376.14-581,499.12-230,389.66

Finding the Fourth Proportional to 421,376.14, 581,499.12 and 230,389.66

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Solution

The fourth proportional to 421,376.14, 581,499.12 and 230,389.66 is: 317,937.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,376.14 : 581,499.12 = 230,389.66 : x
  2. Step 2: Convert to fraction form
    421,376.14/581,499.12 = 230,389.66/x
  3. Step 3: Cross multiply
    421,376.14x = 581,499.12 × 230,389.66
  4. Step 4: Simplify right side
    421,376.14x = 133,971,384,547.10
  5. Step 5: Solve for x
    x = 133,971,384,547.10/421,376.14
  6. Step 6: Final answer
    x = 317,937.76

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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.