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Finding the Fourth Proportional to 245,577.80, 368,366.70 and 87,811.40

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Solution

The fourth proportional to 245,577.80, 368,366.70 and 87,811.40 is: 131,717.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,577.80 : 368,366.70 = 87,811.40 : x
  2. Step 2: Convert to fraction form
    245,577.80/368,366.70 = 87,811.40/x
  3. Step 3: Cross multiply
    245,577.80x = 368,366.70 × 87,811.40
  4. Step 4: Simplify right side
    245,577.80x = 32,346,795,640.38
  5. Step 5: Solve for x
    x = 32,346,795,640.38/245,577.80
  6. Step 6: Final answer
    x = 131,717.10

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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.