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Finding the Fourth Proportional to 220,071.66, 303,885.06 and 139,641.90

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Solution

The fourth proportional to 220,071.66, 303,885.06 and 139,641.90 is: 192,823.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,071.66 : 303,885.06 = 139,641.90 : x
  2. Step 2: Convert to fraction form
    220,071.66/303,885.06 = 139,641.90/x
  3. Step 3: Cross multiply
    220,071.66x = 303,885.06 × 139,641.90
  4. Step 4: Simplify right side
    220,071.66x = 42,435,087,160.01
  5. Step 5: Solve for x
    x = 42,435,087,160.01/220,071.66
  6. Step 6: Final answer
    x = 192,823.95

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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.