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Finding the Fourth Proportional to 373,202.16, 515,018.19 and 209,859.22

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Solution

The fourth proportional to 373,202.16, 515,018.19 and 209,859.22 is: 289,605.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,202.16 : 515,018.19 = 209,859.22 : x
  2. Step 2: Convert to fraction form
    373,202.16/515,018.19 = 209,859.22/x
  3. Step 3: Cross multiply
    373,202.16x = 515,018.19 × 209,859.22
  4. Step 4: Simplify right side
    373,202.16x = 108,081,315,639.21
  5. Step 5: Solve for x
    x = 108,081,315,639.21/373,202.16
  6. Step 6: Final answer
    x = 289,605.28

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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.