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Finding the Fourth Proportional to 287,937, 397,353.42 and 160,620.66

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Solution

The fourth proportional to 287,937, 397,353.42 and 160,620.66 is: 221,656.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,937 : 397,353.42 = 160,620.66 : x
  2. Step 2: Convert to fraction form
    287,937/397,353.42 = 160,620.66/x
  3. Step 3: Cross multiply
    287,937x = 397,353.42 × 160,620.66
  4. Step 4: Simplify right side
    287,937x = 63,823,168,573.66
  5. Step 5: Solve for x
    x = 63,823,168,573.66/287,937
  6. Step 6: Final answer
    x = 221,656.71

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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.