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Finding the Fourth Proportional to 423,903.20, 635,852.28 and 108,359.60

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Solution

The fourth proportional to 423,903.20, 635,852.28 and 108,359.60 is: 162,538.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,903.20 : 635,852.28 = 108,359.60 : x
  2. Step 2: Convert to fraction form
    423,903.20/635,852.28 = 108,359.60/x
  3. Step 3: Cross multiply
    423,903.20x = 635,852.28 × 108,359.60
  4. Step 4: Simplify right side
    423,903.20x = 68,900,698,719.89
  5. Step 5: Solve for x
    x = 68,900,698,719.89/423,903.20
  6. Step 6: Final answer
    x = 162,538.76

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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.