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Finding the Fourth Proportional to 370,409.38, 511,154.48 and 217,445.13

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Solution

The fourth proportional to 370,409.38, 511,154.48 and 217,445.13 is: 300,068.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,409.38 : 511,154.48 = 217,445.13 : x
  2. Step 2: Convert to fraction form
    370,409.38/511,154.48 = 217,445.13/x
  3. Step 3: Cross multiply
    370,409.38x = 511,154.48 × 217,445.13
  4. Step 4: Simplify right side
    370,409.38x = 111,148,052,353.68
  5. Step 5: Solve for x
    x = 111,148,052,353.68/370,409.38
  6. Step 6: Final answer
    x = 300,068.14

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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.