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Finding the Fourth Proportional to 338,984.40, 508,476.60 and 275,998.80

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Solution

The fourth proportional to 338,984.40, 508,476.60 and 275,998.80 is: 413,998.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,984.40 : 508,476.60 = 275,998.80 : x
  2. Step 2: Convert to fraction form
    338,984.40/508,476.60 = 275,998.80/x
  3. Step 3: Cross multiply
    338,984.40x = 508,476.60 × 275,998.80
  4. Step 4: Simplify right side
    338,984.40x = 140,338,931,428.08
  5. Step 5: Solve for x
    x = 140,338,931,428.08/338,984.40
  6. Step 6: Final answer
    x = 413,998.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.