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Finding the Fourth Proportional to 208,117.74, 287,203.21 and 112,624.41

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Solution

The fourth proportional to 208,117.74, 287,203.21 and 112,624.41 is: 155,422.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,117.74 : 287,203.21 = 112,624.41 : x
  2. Step 2: Convert to fraction form
    208,117.74/287,203.21 = 112,624.41/x
  3. Step 3: Cross multiply
    208,117.74x = 287,203.21 × 112,624.41
  4. Step 4: Simplify right side
    208,117.74x = 32,346,092,076.36
  5. Step 5: Solve for x
    x = 32,346,092,076.36/208,117.74
  6. Step 6: Final answer
    x = 155,422.08

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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.