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Finding the Fourth Proportional to 630,231.62, 869,730.03 and 343,751.76

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Solution

The fourth proportional to 630,231.62, 869,730.03 and 343,751.76 is: 474,383.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,231.62 : 869,730.03 = 343,751.76 : x
  2. Step 2: Convert to fraction form
    630,231.62/869,730.03 = 343,751.76/x
  3. Step 3: Cross multiply
    630,231.62x = 869,730.03 × 343,751.76
  4. Step 4: Simplify right side
    630,231.62x = 298,971,228,537.35
  5. Step 5: Solve for x
    x = 298,971,228,537.35/630,231.62
  6. Step 6: Final answer
    x = 474,383.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.