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Finding the Fourth Proportional to 283,803.21, 391,675.86 and 212,058.72

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Solution

The fourth proportional to 283,803.21, 391,675.86 and 212,058.72 is: 292,661.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,803.21 : 391,675.86 = 212,058.72 : x
  2. Step 2: Convert to fraction form
    283,803.21/391,675.86 = 212,058.72/x
  3. Step 3: Cross multiply
    283,803.21x = 391,675.86 × 212,058.72
  4. Step 4: Simplify right side
    283,803.21x = 83,058,281,526.50
  5. Step 5: Solve for x
    x = 83,058,281,526.50/283,803.21
  6. Step 6: Final answer
    x = 292,661.53

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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.