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Finding the Fourth Proportional to 372,456.63, 513,990.56 and 209,090.43

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Solution

The fourth proportional to 372,456.63, 513,990.56 and 209,090.43 is: 288,545.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,456.63 : 513,990.56 = 209,090.43 : x
  2. Step 2: Convert to fraction form
    372,456.63/513,990.56 = 209,090.43/x
  3. Step 3: Cross multiply
    372,456.63x = 513,990.56 × 209,090.43
  4. Step 4: Simplify right side
    372,456.63x = 107,470,507,206.34
  5. Step 5: Solve for x
    x = 107,470,507,206.34/372,456.63
  6. Step 6: Final answer
    x = 288,545.02

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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.