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Finding the Fourth Proportional to 370,848.95, 511,837.10 and 217,887.10

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Solution

The fourth proportional to 370,848.95, 511,837.10 and 217,887.10 is: 300,722.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,848.95 : 511,837.10 = 217,887.10 : x
  2. Step 2: Convert to fraction form
    370,848.95/511,837.10 = 217,887.10/x
  3. Step 3: Cross multiply
    370,848.95x = 511,837.10 × 217,887.10
  4. Step 4: Simplify right side
    370,848.95x = 111,522,699,839.46
  5. Step 5: Solve for x
    x = 111,522,699,839.46/370,848.95
  6. Step 6: Final answer
    x = 300,722.71

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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.