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Finding the Fourth Proportional to 371,770.81, 513,031.95 and 218,773.76

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Solution

The fourth proportional to 371,770.81, 513,031.95 and 218,773.76 is: 301,900.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,770.81 : 513,031.95 = 218,773.76 : x
  2. Step 2: Convert to fraction form
    371,770.81/513,031.95 = 218,773.76/x
  3. Step 3: Cross multiply
    371,770.81x = 513,031.95 × 218,773.76
  4. Step 4: Simplify right side
    371,770.81x = 112,237,928,701.63
  5. Step 5: Solve for x
    x = 112,237,928,701.63/371,770.81
  6. Step 6: Final answer
    x = 301,900.86

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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.