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Finding the Fourth Proportional to 370,679, 511,544.88 and 209,524.40

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Solution

The fourth proportional to 370,679, 511,544.88 and 209,524.40 is: 289,148.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,679 : 511,544.88 = 209,524.40 : x
  2. Step 2: Convert to fraction form
    370,679/511,544.88 = 209,524.40/x
  3. Step 3: Cross multiply
    370,679x = 511,544.88 × 209,524.40
  4. Step 4: Simplify right side
    370,679x = 107,181,134,055.07
  5. Step 5: Solve for x
    x = 107,181,134,055.07/370,679
  6. Step 6: Final answer
    x = 289,148.11

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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.