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Finding the Fourth Proportional to 245,368.86, 368,053.41 and 76,902.30

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Solution

The fourth proportional to 245,368.86, 368,053.41 and 76,902.30 is: 115,353.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,368.86 : 368,053.41 = 76,902.30 : x
  2. Step 2: Convert to fraction form
    245,368.86/368,053.41 = 76,902.30/x
  3. Step 3: Cross multiply
    245,368.86x = 368,053.41 × 76,902.30
  4. Step 4: Simplify right side
    245,368.86x = 28,304,153,751.84
  5. Step 5: Solve for x
    x = 28,304,153,751.84/245,368.86
  6. Step 6: Final answer
    x = 115,353.49

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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.