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Finding the Fourth Proportional to 371,041.26, 512,037.12 and 209,892.90

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Solution

The fourth proportional to 371,041.26, 512,037.12 and 209,892.90 is: 289,652.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,041.26 : 512,037.12 = 209,892.90 : x
  2. Step 2: Convert to fraction form
    371,041.26/512,037.12 = 209,892.90/x
  3. Step 3: Cross multiply
    371,041.26x = 512,037.12 × 209,892.90
  4. Step 4: Simplify right side
    371,041.26x = 107,472,956,024.45
  5. Step 5: Solve for x
    x = 107,472,956,024.45/371,041.26
  6. Step 6: Final answer
    x = 289,652.30

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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.