Home / 421,456.14-581,609.70-230,487.30

Finding the Fourth Proportional to 421,456.14, 581,609.70 and 230,487.30

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Solution

The fourth proportional to 421,456.14, 581,609.70 and 230,487.30 is: 318,072.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,456.14 : 581,609.70 = 230,487.30 : x
  2. Step 2: Convert to fraction form
    421,456.14/581,609.70 = 230,487.30/x
  3. Step 3: Cross multiply
    421,456.14x = 581,609.70 × 230,487.30
  4. Step 4: Simplify right side
    421,456.14x = 134,053,649,406.81
  5. Step 5: Solve for x
    x = 134,053,649,406.81/421,456.14
  6. Step 6: Final answer
    x = 318,072.60

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1.5x scale

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.