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Finding the Fourth Proportional to 515,564.10, 774,038.70 and 302,550.30

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Solution

The fourth proportional to 515,564.10, 774,038.70 and 302,550.30 is: 454,231.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,564.10 : 774,038.70 = 302,550.30 : x
  2. Step 2: Convert to fraction form
    515,564.10/774,038.70 = 302,550.30/x
  3. Step 3: Cross multiply
    515,564.10x = 774,038.70 × 302,550.30
  4. Step 4: Simplify right side
    515,564.10x = 234,185,640,896.61
  5. Step 5: Solve for x
    x = 234,185,640,896.61/515,564.10
  6. Step 6: Final answer
    x = 454,231.86

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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.