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Finding the Fourth Proportional to 245,369.87, 368,054.85 and 76,890.16

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Solution

The fourth proportional to 245,369.87, 368,054.85 and 76,890.16 is: 115,335.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,369.87 : 368,054.85 = 76,890.16 : x
  2. Step 2: Convert to fraction form
    245,369.87/368,054.85 = 76,890.16/x
  3. Step 3: Cross multiply
    245,369.87x = 368,054.85 × 76,890.16
  4. Step 4: Simplify right side
    245,369.87x = 28,299,797,053.68
  5. Step 5: Solve for x
    x = 28,299,797,053.68/245,369.87
  6. Step 6: Final answer
    x = 115,335.26

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1.5x scale

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.