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Finding the Fourth Proportional to 368,268.16, 508,133.76 and 215,276.64

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Solution

The fourth proportional to 368,268.16, 508,133.76 and 215,276.64 is: 297,037.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,268.16 : 508,133.76 = 215,276.64 : x
  2. Step 2: Convert to fraction form
    368,268.16/508,133.76 = 215,276.64/x
  3. Step 3: Cross multiply
    368,268.16x = 508,133.76 × 215,276.64
  4. Step 4: Simplify right side
    368,268.16x = 109,389,328,523.37
  5. Step 5: Solve for x
    x = 109,389,328,523.37/368,268.16
  6. Step 6: Final answer
    x = 297,037.16

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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.