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Finding the Fourth Proportional to 208,427.83, 287,630.66 and 112,934.45

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Solution

The fourth proportional to 208,427.83, 287,630.66 and 112,934.45 is: 155,849.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,427.83 : 287,630.66 = 112,934.45 : x
  2. Step 2: Convert to fraction form
    208,427.83/287,630.66 = 112,934.45/x
  3. Step 3: Cross multiply
    208,427.83x = 287,630.66 × 112,934.45
  4. Step 4: Simplify right side
    208,427.83x = 32,483,410,390.24
  5. Step 5: Solve for x
    x = 32,483,410,390.24/208,427.83
  6. Step 6: Final answer
    x = 155,849.68

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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.