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Finding the Fourth Proportional to 408,090.30, 612,135.45 and 158,772.30

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Solution

The fourth proportional to 408,090.30, 612,135.45 and 158,772.30 is: 238,158.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,090.30 : 612,135.45 = 158,772.30 : x
  2. Step 2: Convert to fraction form
    408,090.30/612,135.45 = 158,772.30/x
  3. Step 3: Cross multiply
    408,090.30x = 612,135.45 × 158,772.30
  4. Step 4: Simplify right side
    408,090.30x = 97,190,153,308.04
  5. Step 5: Solve for x
    x = 97,190,153,308.04/408,090.30
  6. Step 6: Final answer
    x = 238,158.45

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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.