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Finding the Fourth Proportional to 212,062.99, 318,026.98 and 69,881.74

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Solution

The fourth proportional to 212,062.99, 318,026.98 and 69,881.74 is: 104,800.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,062.99 : 318,026.98 = 69,881.74 : x
  2. Step 2: Convert to fraction form
    212,062.99/318,026.98 = 69,881.74/x
  3. Step 3: Cross multiply
    212,062.99x = 318,026.98 × 69,881.74
  4. Step 4: Simplify right side
    212,062.99x = 22,224,278,218.17
  5. Step 5: Solve for x
    x = 22,224,278,218.17/212,062.99
  6. Step 6: Final answer
    x = 104,800.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.