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Finding the Fourth Proportional to 370,937.90, 511,888.17 and 209,786.90

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Solution

The fourth proportional to 370,937.90, 511,888.17 and 209,786.90 is: 289,502.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,937.90 : 511,888.17 = 209,786.90 : x
  2. Step 2: Convert to fraction form
    370,937.90/511,888.17 = 209,786.90/x
  3. Step 3: Cross multiply
    370,937.90x = 511,888.17 × 209,786.90
  4. Step 4: Simplify right side
    370,937.90x = 107,387,432,330.97
  5. Step 5: Solve for x
    x = 107,387,432,330.97/370,937.90
  6. Step 6: Final answer
    x = 289,502.45

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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.