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Finding the Fourth Proportional to 372,457.05, 513,955.15 and 209,076.15

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Solution

The fourth proportional to 372,457.05, 513,955.15 and 209,076.15 is: 288,505.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,457.05 : 513,955.15 = 209,076.15 : x
  2. Step 2: Convert to fraction form
    372,457.05/513,955.15 = 209,076.15/x
  3. Step 3: Cross multiply
    372,457.05x = 513,955.15 × 209,076.15
  4. Step 4: Simplify right side
    372,457.05x = 107,455,764,034.67
  5. Step 5: Solve for x
    x = 107,455,764,034.67/372,457.05
  6. Step 6: Final answer
    x = 288,505.11

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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.