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Finding the Fourth Proportional to 208,287.28, 287,436.62 and 112,794.08

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Solution

The fourth proportional to 208,287.28, 287,436.62 and 112,794.08 is: 155,655.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,287.28 : 287,436.62 = 112,794.08 : x
  2. Step 2: Convert to fraction form
    208,287.28/287,436.62 = 112,794.08/x
  3. Step 3: Cross multiply
    208,287.28x = 287,436.62 × 112,794.08
  4. Step 4: Simplify right side
    208,287.28x = 32,421,149,111.21
  5. Step 5: Solve for x
    x = 32,421,149,111.21/208,287.28
  6. Step 6: Final answer
    x = 155,655.92

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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.