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Finding the Fourth Proportional to 448,131.84, 618,384.96 and 278,332.80

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Solution

The fourth proportional to 448,131.84, 618,384.96 and 278,332.80 is: 384,076.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,131.84 : 618,384.96 = 278,332.80 : x
  2. Step 2: Convert to fraction form
    448,131.84/618,384.96 = 278,332.80/x
  3. Step 3: Cross multiply
    448,131.84x = 618,384.96 × 278,332.80
  4. Step 4: Simplify right side
    448,131.84x = 172,116,817,394.69
  5. Step 5: Solve for x
    x = 172,116,817,394.69/448,131.84
  6. Step 6: Final answer
    x = 384,076.30

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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.