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Finding the Fourth Proportional to 371,806.61, 513,100.71 and 202,051.67

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Solution

The fourth proportional to 371,806.61, 513,100.71 and 202,051.67 is: 278,835.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,806.61 : 513,100.71 = 202,051.67 : x
  2. Step 2: Convert to fraction form
    371,806.61/513,100.71 = 202,051.67/x
  3. Step 3: Cross multiply
    371,806.61x = 513,100.71 × 202,051.67
  4. Step 4: Simplify right side
    371,806.61x = 103,672,855,333.69
  5. Step 5: Solve for x
    x = 103,672,855,333.69/371,806.61
  6. Step 6: Final answer
    x = 278,835.43

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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.