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Finding the Fourth Proportional to 479,477.76, 661,688.42 and 264,613.20

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Solution

The fourth proportional to 479,477.76, 661,688.42 and 264,613.20 is: 365,171.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,477.76 : 661,688.42 = 264,613.20 : x
  2. Step 2: Convert to fraction form
    479,477.76/661,688.42 = 264,613.20/x
  3. Step 3: Cross multiply
    479,477.76x = 661,688.42 × 264,613.20
  4. Step 4: Simplify right side
    479,477.76x = 175,091,490,219.14
  5. Step 5: Solve for x
    x = 175,091,490,219.14/479,477.76
  6. Step 6: Final answer
    x = 365,171.24

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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.