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Finding the Fourth Proportional to 280,559.83, 386,357.08 and 243,749.02

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Solution

The fourth proportional to 280,559.83, 386,357.08 and 243,749.02 is: 335,665.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,559.83 : 386,357.08 = 243,749.02 : x
  2. Step 2: Convert to fraction form
    280,559.83/386,357.08 = 243,749.02/x
  3. Step 3: Cross multiply
    280,559.83x = 386,357.08 × 243,749.02
  4. Step 4: Simplify right side
    280,559.83x = 94,174,161,026.39
  5. Step 5: Solve for x
    x = 94,174,161,026.39/280,559.83
  6. Step 6: Final answer
    x = 335,665.17

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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.