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Finding the Fourth Proportional to 245,602.50, 368,520.39 and 79,390.50

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Solution

The fourth proportional to 245,602.50, 368,520.39 and 79,390.50 is: 119,123.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,602.50 : 368,520.39 = 79,390.50 : x
  2. Step 2: Convert to fraction form
    245,602.50/368,520.39 = 79,390.50/x
  3. Step 3: Cross multiply
    245,602.50x = 368,520.39 × 79,390.50
  4. Step 4: Simplify right side
    245,602.50x = 29,257,018,022.30
  5. Step 5: Solve for x
    x = 29,257,018,022.30/245,602.50
  6. Step 6: Final answer
    x = 119,123.45

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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.