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Finding the Fourth Proportional to 287,350.98, 396,515.96 and 160,038.42

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Solution

The fourth proportional to 287,350.98, 396,515.96 and 160,038.42 is: 220,837.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,350.98 : 396,515.96 = 160,038.42 : x
  2. Step 2: Convert to fraction form
    287,350.98/396,515.96 = 160,038.42/x
  3. Step 3: Cross multiply
    287,350.98x = 396,515.96 × 160,038.42
  4. Step 4: Simplify right side
    287,350.98x = 63,457,787,743.18
  5. Step 5: Solve for x
    x = 63,457,787,743.18/287,350.98
  6. Step 6: Final answer
    x = 220,837.21

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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.