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Finding the Fourth Proportional to 208,304.65, 287,458.36 and 117,660.39

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Solution

The fourth proportional to 208,304.65, 287,458.36 and 117,660.39 is: 162,370.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,304.65 : 287,458.36 = 117,660.39 : x
  2. Step 2: Convert to fraction form
    208,304.65/287,458.36 = 117,660.39/x
  3. Step 3: Cross multiply
    208,304.65x = 287,458.36 × 117,660.39
  4. Step 4: Simplify right side
    208,304.65x = 33,822,462,746.36
  5. Step 5: Solve for x
    x = 33,822,462,746.36/208,304.65
  6. Step 6: Final answer
    x = 162,370.18

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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.