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Finding the Fourth Proportional to 208,220.52, 287,345.88 and 112,728.82

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Solution

The fourth proportional to 208,220.52, 287,345.88 and 112,728.82 is: 155,566.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,220.52 : 287,345.88 = 112,728.82 : x
  2. Step 2: Convert to fraction form
    208,220.52/287,345.88 = 112,728.82/x
  3. Step 3: Cross multiply
    208,220.52x = 287,345.88 × 112,728.82
  4. Step 4: Simplify right side
    208,220.52x = 32,392,161,984.26
  5. Step 5: Solve for x
    x = 32,392,161,984.26/208,220.52
  6. Step 6: Final answer
    x = 155,566.62

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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.