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Finding the Fourth Proportional to 371,037.35, 512,031.71 and 209,888.97

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Solution

The fourth proportional to 371,037.35, 512,031.71 and 209,888.97 is: 289,646.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,037.35 : 512,031.71 = 209,888.97 : x
  2. Step 2: Convert to fraction form
    371,037.35/512,031.71 = 209,888.97/x
  3. Step 3: Cross multiply
    371,037.35x = 512,031.71 × 209,888.97
  4. Step 4: Simplify right side
    371,037.35x = 107,469,806,823.84
  5. Step 5: Solve for x
    x = 107,469,806,823.84/371,037.35
  6. Step 6: Final answer
    x = 289,646.87

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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.