Home / 421,011.12-580,988.48-230,020.40

Finding the Fourth Proportional to 421,011.12, 580,988.48 and 230,020.40

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Solution

The fourth proportional to 421,011.12, 580,988.48 and 230,020.40 is: 317,424.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,011.12 : 580,988.48 = 230,020.40 : x
  2. Step 2: Convert to fraction form
    421,011.12/580,988.48 = 230,020.40/x
  3. Step 3: Cross multiply
    421,011.12x = 580,988.48 × 230,020.40
  4. Step 4: Simplify right side
    421,011.12x = 133,639,202,564.99
  5. Step 5: Solve for x
    x = 133,639,202,564.99/421,011.12
  6. Step 6: Final answer
    x = 317,424.40

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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.