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Finding the Fourth Proportional to 287,685.73, 396,843.73 and 180,068.93

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Solution

The fourth proportional to 287,685.73, 396,843.73 and 180,068.93 is: 248,393.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,685.73 : 396,843.73 = 180,068.93 : x
  2. Step 2: Convert to fraction form
    287,685.73/396,843.73 = 180,068.93/x
  3. Step 3: Cross multiply
    287,685.73x = 396,843.73 × 180,068.93
  4. Step 4: Simplify right side
    287,685.73x = 71,459,225,838.31
  5. Step 5: Solve for x
    x = 71,459,225,838.31/287,685.73
  6. Step 6: Final answer
    x = 248,393.36

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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.