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Finding the Fourth Proportional to 447,012.34, 616,873.72 and 243,063.40

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Solution

The fourth proportional to 447,012.34, 616,873.72 and 243,063.40 is: 335,425.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,012.34 : 616,873.72 = 243,063.40 : x
  2. Step 2: Convert to fraction form
    447,012.34/616,873.72 = 243,063.40/x
  3. Step 3: Cross multiply
    447,012.34x = 616,873.72 × 243,063.40
  4. Step 4: Simplify right side
    447,012.34x = 149,939,423,753.85
  5. Step 5: Solve for x
    x = 149,939,423,753.85/447,012.34
  6. Step 6: Final answer
    x = 335,425.69

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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.