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Finding the Fourth Proportional to 208,655.08, 312,981.18 and 83,994.28

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Solution

The fourth proportional to 208,655.08, 312,981.18 and 83,994.28 is: 125,990.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,655.08 : 312,981.18 = 83,994.28 : x
  2. Step 2: Convert to fraction form
    208,655.08/312,981.18 = 83,994.28/x
  3. Step 3: Cross multiply
    208,655.08x = 312,981.18 × 83,994.28
  4. Step 4: Simplify right side
    208,655.08x = 26,288,628,867.65
  5. Step 5: Solve for x
    x = 26,288,628,867.65/208,655.08
  6. Step 6: Final answer
    x = 125,990.84

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1.5x scale

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.