Home / 287,639.52-396,956.16-160,316.04

Finding the Fourth Proportional to 287,639.52, 396,956.16 and 160,316.04

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Solution

The fourth proportional to 287,639.52, 396,956.16 and 160,316.04 is: 221,243.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,639.52 : 396,956.16 = 160,316.04 : x
  2. Step 2: Convert to fraction form
    287,639.52/396,956.16 = 160,316.04/x
  3. Step 3: Cross multiply
    287,639.52x = 396,956.16 × 160,316.04
  4. Step 4: Simplify right side
    287,639.52x = 63,638,439,624.81
  5. Step 5: Solve for x
    x = 63,638,439,624.81/287,639.52
  6. Step 6: Final answer
    x = 221,243.73

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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.