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Finding the Fourth Proportional to 348,171.89, 480,434.22 and 212,156.28

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Solution

The fourth proportional to 348,171.89, 480,434.22 and 212,156.28 is: 292,749.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,171.89 : 480,434.22 = 212,156.28 : x
  2. Step 2: Convert to fraction form
    348,171.89/480,434.22 = 212,156.28/x
  3. Step 3: Cross multiply
    348,171.89x = 480,434.22 × 212,156.28
  4. Step 4: Simplify right side
    348,171.89x = 101,927,136,899.90
  5. Step 5: Solve for x
    x = 101,927,136,899.90/348,171.89
  6. Step 6: Final answer
    x = 292,749.48

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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.