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Finding the Fourth Proportional to 208,118.06, 287,203.16 and 112,624.77

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Solution

The fourth proportional to 208,118.06, 287,203.16 and 112,624.77 is: 155,422.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,118.06 : 287,203.16 = 112,624.77 : x
  2. Step 2: Convert to fraction form
    208,118.06/287,203.16 = 112,624.77/x
  3. Step 3: Cross multiply
    208,118.06x = 287,203.16 × 112,624.77
  4. Step 4: Simplify right side
    208,118.06x = 32,346,189,275.15
  5. Step 5: Solve for x
    x = 32,346,189,275.15/208,118.06
  6. Step 6: Final answer
    x = 155,422.31

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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.