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Finding the Fourth Proportional to 448,267.68, 618,369.12 and 286,949.16

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Solution

The fourth proportional to 448,267.68, 618,369.12 and 286,949.16 is: 395,836.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,267.68 : 618,369.12 = 286,949.16 : x
  2. Step 2: Convert to fraction form
    448,267.68/618,369.12 = 286,949.16/x
  3. Step 3: Cross multiply
    448,267.68x = 618,369.12 × 286,949.16
  4. Step 4: Simplify right side
    448,267.68x = 177,440,499,553.94
  5. Step 5: Solve for x
    x = 177,440,499,553.94/448,267.68
  6. Step 6: Final answer
    x = 395,836.03

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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.