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Finding the Fourth Proportional to 470,958.01, 649,693.63 and 279,836.08

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Solution

The fourth proportional to 470,958.01, 649,693.63 and 279,836.08 is: 386,038.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,958.01 : 649,693.63 = 279,836.08 : x
  2. Step 2: Convert to fraction form
    470,958.01/649,693.63 = 279,836.08/x
  3. Step 3: Cross multiply
    470,958.01x = 649,693.63 × 279,836.08
  4. Step 4: Simplify right side
    470,958.01x = 181,807,718,620.17
  5. Step 5: Solve for x
    x = 181,807,718,620.17/470,958.01
  6. Step 6: Final answer
    x = 386,038.06

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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.