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Finding the Fourth Proportional to 386,313.90, 533,111.52 and 216,548.04

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Solution

The fourth proportional to 386,313.90, 533,111.52 and 216,548.04 is: 298,835.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,313.90 : 533,111.52 = 216,548.04 : x
  2. Step 2: Convert to fraction form
    386,313.90/533,111.52 = 216,548.04/x
  3. Step 3: Cross multiply
    386,313.90x = 533,111.52 × 216,548.04
  4. Step 4: Simplify right side
    386,313.90x = 115,444,254,757.42
  5. Step 5: Solve for x
    x = 115,444,254,757.42/386,313.90
  6. Step 6: Final answer
    x = 298,835.36

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.