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Finding the Fourth Proportional to 371,031.73, 512,023.95 and 209,883.35

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Solution

The fourth proportional to 371,031.73, 512,023.95 and 209,883.35 is: 289,639.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,031.73 : 512,023.95 = 209,883.35 : x
  2. Step 2: Convert to fraction form
    371,031.73/512,023.95 = 209,883.35/x
  3. Step 3: Cross multiply
    371,031.73x = 512,023.95 × 209,883.35
  4. Step 4: Simplify right side
    371,031.73x = 107,465,303,186.29
  5. Step 5: Solve for x
    x = 107,465,303,186.29/371,031.73
  6. Step 6: Final answer
    x = 289,639.12

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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.