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Finding the Fourth Proportional to 630,172.80, 945,374.40 and 256,233.60

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Solution

The fourth proportional to 630,172.80, 945,374.40 and 256,233.60 is: 384,397.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,172.80 : 945,374.40 = 256,233.60 : x
  2. Step 2: Convert to fraction form
    630,172.80/945,374.40 = 256,233.60/x
  3. Step 3: Cross multiply
    630,172.80x = 945,374.40 × 256,233.60
  4. Step 4: Simplify right side
    630,172.80x = 242,236,685,859.84
  5. Step 5: Solve for x
    x = 242,236,685,859.84/630,172.80
  6. Step 6: Final answer
    x = 384,397.24

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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.