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Finding the Fourth Proportional to 245,622.70, 368,434.05 and 79,410.70

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Solution

The fourth proportional to 245,622.70, 368,434.05 and 79,410.70 is: 119,116.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,622.70 : 368,434.05 = 79,410.70 : x
  2. Step 2: Convert to fraction form
    245,622.70/368,434.05 = 79,410.70/x
  3. Step 3: Cross multiply
    245,622.70x = 368,434.05 × 79,410.70
  4. Step 4: Simplify right side
    245,622.70x = 29,257,605,814.34
  5. Step 5: Solve for x
    x = 29,257,605,814.34/245,622.70
  6. Step 6: Final answer
    x = 119,116.05

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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.