Home / 421,020.16-581,016.20-230,045.36

Finding the Fourth Proportional to 421,020.16, 581,016.20 and 230,045.36

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Solution

The fourth proportional to 421,020.16, 581,016.20 and 230,045.36 is: 317,467.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,020.16 : 581,016.20 = 230,045.36 : x
  2. Step 2: Convert to fraction form
    421,020.16/581,016.20 = 230,045.36/x
  3. Step 3: Cross multiply
    421,020.16x = 581,016.20 × 230,045.36
  4. Step 4: Simplify right side
    421,020.16x = 133,660,080,894.83
  5. Step 5: Solve for x
    x = 133,660,080,894.83/421,020.16
  6. Step 6: Final answer
    x = 317,467.18

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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.