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Finding the Fourth Proportional to 287,277.10, 430,915.65 and 162,861.10

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Solution

The fourth proportional to 287,277.10, 430,915.65 and 162,861.10 is: 244,291.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,277.10 : 430,915.65 = 162,861.10 : x
  2. Step 2: Convert to fraction form
    287,277.10/430,915.65 = 162,861.10/x
  3. Step 3: Cross multiply
    287,277.10x = 430,915.65 × 162,861.10
  4. Step 4: Simplify right side
    287,277.10x = 70,179,396,766.22
  5. Step 5: Solve for x
    x = 70,179,396,766.22/287,277.10
  6. Step 6: Final answer
    x = 244,291.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.