Home / 208,206.21-287,325.49-112,712.90

Finding the Fourth Proportional to 208,206.21, 287,325.49 and 112,712.90

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Solution

The fourth proportional to 208,206.21, 287,325.49 and 112,712.90 is: 155,544.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,206.21 : 287,325.49 = 112,712.90 : x
  2. Step 2: Convert to fraction form
    208,206.21/287,325.49 = 112,712.90/x
  3. Step 3: Cross multiply
    208,206.21x = 287,325.49 × 112,712.90
  4. Step 4: Simplify right side
    208,206.21x = 32,385,289,221.82
  5. Step 5: Solve for x
    x = 32,385,289,221.82/208,206.21
  6. Step 6: Final answer
    x = 155,544.30

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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.