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Finding the Fourth Proportional to 212,139.72, 292,459.95 and 169,264.80

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Solution

The fourth proportional to 212,139.72, 292,459.95 and 169,264.80 is: 233,351.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,139.72 : 292,459.95 = 169,264.80 : x
  2. Step 2: Convert to fraction form
    212,139.72/292,459.95 = 169,264.80/x
  3. Step 3: Cross multiply
    212,139.72x = 292,459.95 × 169,264.80
  4. Step 4: Simplify right side
    212,139.72x = 49,503,174,944.76
  5. Step 5: Solve for x
    x = 49,503,174,944.76/212,139.72
  6. Step 6: Final answer
    x = 233,351.75

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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.