Home / 208,378.22-287,561.66-112,885.30

Finding the Fourth Proportional to 208,378.22, 287,561.66 and 112,885.30

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Solution

The fourth proportional to 208,378.22, 287,561.66 and 112,885.30 is: 155,781.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,378.22 : 287,561.66 = 112,885.30 : x
  2. Step 2: Convert to fraction form
    208,378.22/287,561.66 = 112,885.30/x
  3. Step 3: Cross multiply
    208,378.22x = 287,561.66 × 112,885.30
  4. Step 4: Simplify right side
    208,378.22x = 32,461,484,257.60
  5. Step 5: Solve for x
    x = 32,461,484,257.60/208,378.22
  6. Step 6: Final answer
    x = 155,781.56

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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.