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Finding the Fourth Proportional to 247,101.68, 340,987.08 and 139,665.32

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Solution

The fourth proportional to 247,101.68, 340,987.08 and 139,665.32 is: 192,730.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,101.68 : 340,987.08 = 139,665.32 : x
  2. Step 2: Convert to fraction form
    247,101.68/340,987.08 = 139,665.32/x
  3. Step 3: Cross multiply
    247,101.68x = 340,987.08 × 139,665.32
  4. Step 4: Simplify right side
    247,101.68x = 47,624,069,644.07
  5. Step 5: Solve for x
    x = 47,624,069,644.07/247,101.68
  6. Step 6: Final answer
    x = 192,730.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.