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Finding the Fourth Proportional to 287,903.98, 397,308.99 and 160,584.94

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Solution

The fourth proportional to 287,903.98, 397,308.99 and 160,584.94 is: 221,608.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,903.98 : 397,308.99 = 160,584.94 : x
  2. Step 2: Convert to fraction form
    287,903.98/397,308.99 = 160,584.94/x
  3. Step 3: Cross multiply
    287,903.98x = 397,308.99 × 160,584.94
  4. Step 4: Simplify right side
    287,903.98x = 63,801,840,320.61
  5. Step 5: Solve for x
    x = 63,801,840,320.61/287,903.98
  6. Step 6: Final answer
    x = 221,608.05

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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.