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Finding the Fourth Proportional to 630,051.28, 945,080.36 and 156,736.64

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Solution

The fourth proportional to 630,051.28, 945,080.36 and 156,736.64 is: 235,105.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,051.28 : 945,080.36 = 156,736.64 : x
  2. Step 2: Convert to fraction form
    630,051.28/945,080.36 = 156,736.64/x
  3. Step 3: Cross multiply
    630,051.28x = 945,080.36 × 156,736.64
  4. Step 4: Simplify right side
    630,051.28x = 148,128,720,156.39
  5. Step 5: Solve for x
    x = 148,128,720,156.39/630,051.28
  6. Step 6: Final answer
    x = 235,105.82

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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.