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Finding the Fourth Proportional to 208,425.40, 287,627.31 and 112,932.07

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Solution

The fourth proportional to 208,425.40, 287,627.31 and 112,932.07 is: 155,846.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,425.40 : 287,627.31 = 112,932.07 : x
  2. Step 2: Convert to fraction form
    208,425.40/287,627.31 = 112,932.07/x
  3. Step 3: Cross multiply
    208,425.40x = 287,627.31 × 112,932.07
  4. Step 4: Simplify right side
    208,425.40x = 32,482,347,506.83
  5. Step 5: Solve for x
    x = 32,482,347,506.83/208,425.40
  6. Step 6: Final answer
    x = 155,846.40

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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.