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Finding the Fourth Proportional to 245,480.67, 368,104.66 and 85,500.81

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Solution

The fourth proportional to 245,480.67, 368,104.66 and 85,500.81 is: 128,210.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,480.67 : 368,104.66 = 85,500.81 : x
  2. Step 2: Convert to fraction form
    245,480.67/368,104.66 = 85,500.81/x
  3. Step 3: Cross multiply
    245,480.67x = 368,104.66 × 85,500.81
  4. Step 4: Simplify right side
    245,480.67x = 31,473,246,594.77
  5. Step 5: Solve for x
    x = 31,473,246,594.77/245,480.67
  6. Step 6: Final answer
    x = 128,210.69

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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.