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Finding the Fourth Proportional to 247,813.40, 371,720.10 and 235,019.45

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Solution

The fourth proportional to 247,813.40, 371,720.10 and 235,019.45 is: 352,529.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,813.40 : 371,720.10 = 235,019.45 : x
  2. Step 2: Convert to fraction form
    247,813.40/371,720.10 = 235,019.45/x
  3. Step 3: Cross multiply
    247,813.40x = 371,720.10 × 235,019.45
  4. Step 4: Simplify right side
    247,813.40x = 87,361,453,455.95
  5. Step 5: Solve for x
    x = 87,361,453,455.95/247,813.40
  6. Step 6: Final answer
    x = 352,529.18

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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.