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Finding the Fourth Proportional to 421,010.11, 580,987.11 and 230,019.40

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Solution

The fourth proportional to 421,010.11, 580,987.11 and 230,019.40 is: 317,423.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,010.11 : 580,987.11 = 230,019.40 : x
  2. Step 2: Convert to fraction form
    421,010.11/580,987.11 = 230,019.40/x
  3. Step 3: Cross multiply
    421,010.11x = 580,987.11 × 230,019.40
  4. Step 4: Simplify right side
    421,010.11x = 133,638,306,449.93
  5. Step 5: Solve for x
    x = 133,638,306,449.93/421,010.11
  6. Step 6: Final answer
    x = 317,423.03

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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.