Home / 430,600.32-645,966.09-220,167.18

Finding the Fourth Proportional to 430,600.32, 645,966.09 and 220,167.18

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Solution

The fourth proportional to 430,600.32, 645,966.09 and 220,167.18 is: 330,284.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,600.32 : 645,966.09 = 220,167.18 : x
  2. Step 2: Convert to fraction form
    430,600.32/645,966.09 = 220,167.18/x
  3. Step 3: Cross multiply
    430,600.32x = 645,966.09 × 220,167.18
  4. Step 4: Simplify right side
    430,600.32x = 142,220,532,410.93
  5. Step 5: Solve for x
    x = 142,220,532,410.93/430,600.32
  6. Step 6: Final answer
    x = 330,284.32

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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.