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Finding the Fourth Proportional to 208,659, 313,048.98 and 60,915

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Solution

The fourth proportional to 208,659, 313,048.98 and 60,915 is: 91,390.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,659 : 313,048.98 = 60,915 : x
  2. Step 2: Convert to fraction form
    208,659/313,048.98 = 60,915/x
  3. Step 3: Cross multiply
    208,659x = 313,048.98 × 60,915
  4. Step 4: Simplify right side
    208,659x = 19,069,378,616.70
  5. Step 5: Solve for x
    x = 19,069,378,616.70/208,659
  6. Step 6: Final answer
    x = 91,390.16

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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.