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Finding the Fourth Proportional to 395,993.36, 546,495.72 and 217,145.36

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Solution

The fourth proportional to 395,993.36, 546,495.72 and 217,145.36 is: 299,674.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,993.36 : 546,495.72 = 217,145.36 : x
  2. Step 2: Convert to fraction form
    395,993.36/546,495.72 = 217,145.36/x
  3. Step 3: Cross multiply
    395,993.36x = 546,495.72 × 217,145.36
  4. Step 4: Simplify right side
    395,993.36x = 118,669,009,857.86
  5. Step 5: Solve for x
    x = 118,669,009,857.86/395,993.36
  6. Step 6: Final answer
    x = 299,674.24

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1.5x scale

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.