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Finding the Fourth Proportional to 245,355.52, 368,032.80 and 76,888.72

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Solution

The fourth proportional to 245,355.52, 368,032.80 and 76,888.72 is: 115,332.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,355.52 : 368,032.80 = 76,888.72 : x
  2. Step 2: Convert to fraction form
    245,355.52/368,032.80 = 76,888.72/x
  3. Step 3: Cross multiply
    245,355.52x = 368,032.80 × 76,888.72
  4. Step 4: Simplify right side
    245,355.52x = 28,297,570,910.02
  5. Step 5: Solve for x
    x = 28,297,570,910.02/245,355.52
  6. Step 6: Final answer
    x = 115,332.93

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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.