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Finding the Fourth Proportional to 247,412.08, 371,142.40 and 69,920.40

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Solution

The fourth proportional to 247,412.08, 371,142.40 and 69,920.40 is: 104,887.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,412.08 : 371,142.40 = 69,920.40 : x
  2. Step 2: Convert to fraction form
    247,412.08/371,142.40 = 69,920.40/x
  3. Step 3: Cross multiply
    247,412.08x = 371,142.40 × 69,920.40
  4. Step 4: Simplify right side
    247,412.08x = 25,950,425,064.96
  5. Step 5: Solve for x
    x = 25,950,425,064.96/247,412.08
  6. Step 6: Final answer
    x = 104,887.46

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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.