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Finding the Fourth Proportional to 370,427.40, 555,641.72 and 89,944.64

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Solution

The fourth proportional to 370,427.40, 555,641.72 and 89,944.64 is: 134,917.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,427.40 : 555,641.72 = 89,944.64 : x
  2. Step 2: Convert to fraction form
    370,427.40/555,641.72 = 89,944.64/x
  3. Step 3: Cross multiply
    370,427.40x = 555,641.72 × 89,944.64
  4. Step 4: Simplify right side
    370,427.40x = 49,976,994,474.38
  5. Step 5: Solve for x
    x = 49,976,994,474.38/370,427.40
  6. Step 6: Final answer
    x = 134,917.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.