Home / 287,455.64-396,689.00-160,131.53

Finding the Fourth Proportional to 287,455.64, 396,689.00 and 160,131.53

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Solution

The fourth proportional to 287,455.64, 396,689.00 and 160,131.53 is: 220,981.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,455.64 : 396,689.00 = 160,131.53 : x
  2. Step 2: Convert to fraction form
    287,455.64/396,689.00 = 160,131.53/x
  3. Step 3: Cross multiply
    287,455.64x = 396,689.00 × 160,131.53
  4. Step 4: Simplify right side
    287,455.64x = 63,522,416,695.23
  5. Step 5: Solve for x
    x = 63,522,416,695.23/287,455.64
  6. Step 6: Final answer
    x = 220,981.64

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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.