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Finding the Fourth Proportional to 208,206.83, 287,325.53 and 112,713.53

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Solution

The fourth proportional to 208,206.83, 287,325.53 and 112,713.53 is: 155,544.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,206.83 : 287,325.53 = 112,713.53 : x
  2. Step 2: Convert to fraction form
    208,206.83/287,325.53 = 112,713.53/x
  3. Step 3: Cross multiply
    208,206.83x = 287,325.53 × 112,713.53
  4. Step 4: Simplify right side
    208,206.83x = 32,385,472,745.23
  5. Step 5: Solve for x
    x = 32,385,472,745.23/208,206.83
  6. Step 6: Final answer
    x = 155,544.72

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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.