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Finding the Fourth Proportional to 395,690.15, 546,062.57 and 242,812.81

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Solution

The fourth proportional to 395,690.15, 546,062.57 and 242,812.81 is: 335,087.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,690.15 : 546,062.57 = 242,812.81 : x
  2. Step 2: Convert to fraction form
    395,690.15/546,062.57 = 242,812.81/x
  3. Step 3: Cross multiply
    395,690.15x = 546,062.57 × 242,812.81
  4. Step 4: Simplify right side
    395,690.15x = 132,590,987,057.52
  5. Step 5: Solve for x
    x = 132,590,987,057.52/395,690.15
  6. Step 6: Final answer
    x = 335,087.91

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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.