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Finding the Fourth Proportional to 245,116.60, 367,674.90 and 78,904.60

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Solution

The fourth proportional to 245,116.60, 367,674.90 and 78,904.60 is: 118,356.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,116.60 : 367,674.90 = 78,904.60 : x
  2. Step 2: Convert to fraction form
    245,116.60/367,674.90 = 78,904.60/x
  3. Step 3: Cross multiply
    245,116.60x = 367,674.90 × 78,904.60
  4. Step 4: Simplify right side
    245,116.60x = 29,011,240,914.54
  5. Step 5: Solve for x
    x = 29,011,240,914.54/245,116.60
  6. Step 6: Final answer
    x = 118,356.90

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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.