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Finding the Fourth Proportional to 456,799.20, 685,123.20 and 153,189.60

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Solution

The fourth proportional to 456,799.20, 685,123.20 and 153,189.60 is: 229,759.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,799.20 : 685,123.20 = 153,189.60 : x
  2. Step 2: Convert to fraction form
    456,799.20/685,123.20 = 153,189.60/x
  3. Step 3: Cross multiply
    456,799.20x = 685,123.20 × 153,189.60
  4. Step 4: Simplify right side
    456,799.20x = 104,953,748,958.72
  5. Step 5: Solve for x
    x = 104,953,748,958.72/456,799.20
  6. Step 6: Final answer
    x = 229,759.05

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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.