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Finding the Fourth Proportional to 448,416, 618,857.82 and 247,212

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Solution

The fourth proportional to 448,416, 618,857.82 and 247,212 is: 341,176.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,416 : 618,857.82 = 247,212 : x
  2. Step 2: Convert to fraction form
    448,416/618,857.82 = 247,212/x
  3. Step 3: Cross multiply
    448,416x = 618,857.82 × 247,212
  4. Step 4: Simplify right side
    448,416x = 152,989,079,397.84
  5. Step 5: Solve for x
    x = 152,989,079,397.84/448,416
  6. Step 6: Final answer
    x = 341,176.67

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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.