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Finding the Fourth Proportional to 404,300.10, 606,450.15 and 138,020.70

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Solution

The fourth proportional to 404,300.10, 606,450.15 and 138,020.70 is: 207,031.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,300.10 : 606,450.15 = 138,020.70 : x
  2. Step 2: Convert to fraction form
    404,300.10/606,450.15 = 138,020.70/x
  3. Step 3: Cross multiply
    404,300.10x = 606,450.15 × 138,020.70
  4. Step 4: Simplify right side
    404,300.10x = 83,702,674,218.11
  5. Step 5: Solve for x
    x = 83,702,674,218.11/404,300.10
  6. Step 6: Final answer
    x = 207,031.05

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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.