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Finding the Fourth Proportional to 447,018.76, 616,886.64 and 243,069.52

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Solution

The fourth proportional to 447,018.76, 616,886.64 and 243,069.52 is: 335,436.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,018.76 : 616,886.64 = 243,069.52 : x
  2. Step 2: Convert to fraction form
    447,018.76/616,886.64 = 243,069.52/x
  3. Step 3: Cross multiply
    447,018.76x = 616,886.64 × 243,069.52
  4. Step 4: Simplify right side
    447,018.76x = 149,946,339,479.21
  5. Step 5: Solve for x
    x = 149,946,339,479.21/447,018.76
  6. Step 6: Final answer
    x = 335,436.35

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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.