Home / 430,601.32-645,967.59-220,168.18

Finding the Fourth Proportional to 430,601.32, 645,967.59 and 220,168.18

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Solution

The fourth proportional to 430,601.32, 645,967.59 and 220,168.18 is: 330,285.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,601.32 : 645,967.59 = 220,168.18 : x
  2. Step 2: Convert to fraction form
    430,601.32/645,967.59 = 220,168.18/x
  3. Step 3: Cross multiply
    430,601.32x = 645,967.59 × 220,168.18
  4. Step 4: Simplify right side
    430,601.32x = 142,221,508,629.29
  5. Step 5: Solve for x
    x = 142,221,508,629.29/430,601.32
  6. Step 6: Final answer
    x = 330,285.82

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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.