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Finding the Fourth Proportional to 470,891.28, 649,829.10 and 256,030.86

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Solution

The fourth proportional to 470,891.28, 649,829.10 and 256,030.86 is: 353,322.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,891.28 : 649,829.10 = 256,030.86 : x
  2. Step 2: Convert to fraction form
    470,891.28/649,829.10 = 256,030.86/x
  3. Step 3: Cross multiply
    470,891.28x = 649,829.10 × 256,030.86
  4. Step 4: Simplify right side
    470,891.28x = 166,376,303,326.03
  5. Step 5: Solve for x
    x = 166,376,303,326.03/470,891.28
  6. Step 6: Final answer
    x = 353,322.12

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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.