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Finding the Fourth Proportional to 370,663.43, 511,541.53 and 209,519.80

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Solution

The fourth proportional to 370,663.43, 511,541.53 and 209,519.80 is: 289,152.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,663.43 : 511,541.53 = 209,519.80 : x
  2. Step 2: Convert to fraction form
    370,663.43/511,541.53 = 209,519.80/x
  3. Step 3: Cross multiply
    370,663.43x = 511,541.53 × 209,519.80
  4. Step 4: Simplify right side
    370,663.43x = 107,178,077,254.64
  5. Step 5: Solve for x
    x = 107,178,077,254.64/370,663.43
  6. Step 6: Final answer
    x = 289,152.02

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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.