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Finding the Fourth Proportional to 630,172.30, 945,373.65 and 256,233.10

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Solution

The fourth proportional to 630,172.30, 945,373.65 and 256,233.10 is: 384,396.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,172.30 : 945,373.65 = 256,233.10 : x
  2. Step 2: Convert to fraction form
    630,172.30/945,373.65 = 256,233.10/x
  3. Step 3: Cross multiply
    630,172.30x = 945,373.65 × 256,233.10
  4. Step 4: Simplify right side
    630,172.30x = 242,236,020,997.82
  5. Step 5: Solve for x
    x = 242,236,020,997.82/630,172.30
  6. Step 6: Final answer
    x = 384,396.49

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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.