Home / 287,217.40-430,826.10-161,246.20

Finding the Fourth Proportional to 287,217.40, 430,826.10 and 161,246.20

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Solution

The fourth proportional to 287,217.40, 430,826.10 and 161,246.20 is: 241,869.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,217.40 : 430,826.10 = 161,246.20 : x
  2. Step 2: Convert to fraction form
    287,217.40/430,826.10 = 161,246.20/x
  3. Step 3: Cross multiply
    287,217.40x = 430,826.10 × 161,246.20
  4. Step 4: Simplify right side
    287,217.40x = 69,469,071,485.82
  5. Step 5: Solve for x
    x = 69,469,071,485.82/287,217.40
  6. Step 6: Final answer
    x = 241,869.30

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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.