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Finding the Fourth Proportional to 287,490.75, 396,737.37 and 160,174.68

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Solution

The fourth proportional to 287,490.75, 396,737.37 and 160,174.68 is: 221,041.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,490.75 : 396,737.37 = 160,174.68 : x
  2. Step 2: Convert to fraction form
    287,490.75/396,737.37 = 160,174.68/x
  3. Step 3: Cross multiply
    287,490.75x = 396,737.37 × 160,174.68
  4. Step 4: Simplify right side
    287,490.75x = 63,547,281,283.79
  5. Step 5: Solve for x
    x = 63,547,281,283.79/287,490.75
  6. Step 6: Final answer
    x = 221,041.13

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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.