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Finding the Fourth Proportional to 421,423.51, 581,067.52 and 340,601.10

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Solution

The fourth proportional to 421,423.51, 581,067.52 and 340,601.10 is: 469,627.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,423.51 : 581,067.52 = 340,601.10 : x
  2. Step 2: Convert to fraction form
    421,423.51/581,067.52 = 340,601.10/x
  3. Step 3: Cross multiply
    421,423.51x = 581,067.52 × 340,601.10
  4. Step 4: Simplify right side
    421,423.51x = 197,912,236,486.27
  5. Step 5: Solve for x
    x = 197,912,236,486.27/421,423.51
  6. Step 6: Final answer
    x = 469,627.90

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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.