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Finding the Fourth Proportional to 371,310.17, 512,320.23 and 210,165.23

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Solution

The fourth proportional to 371,310.17, 512,320.23 and 210,165.23 is: 289,978.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,310.17 : 512,320.23 = 210,165.23 : x
  2. Step 2: Convert to fraction form
    371,310.17/512,320.23 = 210,165.23/x
  3. Step 3: Cross multiply
    371,310.17x = 512,320.23 × 210,165.23
  4. Step 4: Simplify right side
    371,310.17x = 107,671,900,252.40
  5. Step 5: Solve for x
    x = 107,671,900,252.40/371,310.17
  6. Step 6: Final answer
    x = 289,978.33

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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.