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Finding the Fourth Proportional to 373,259.80, 515,106.26 and 209,919.43

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Solution

The fourth proportional to 373,259.80, 515,106.26 and 209,919.43 is: 289,693.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,259.80 : 515,106.26 = 209,919.43 : x
  2. Step 2: Convert to fraction form
    373,259.80/515,106.26 = 209,919.43/x
  3. Step 3: Cross multiply
    373,259.80x = 515,106.26 × 209,919.43
  4. Step 4: Simplify right side
    373,259.80x = 108,130,812,488.63
  5. Step 5: Solve for x
    x = 108,130,812,488.63/373,259.80
  6. Step 6: Final answer
    x = 289,693.16

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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.