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Finding the Fourth Proportional to 353,978.24, 529,719.96 and 220,921.16

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Solution

The fourth proportional to 353,978.24, 529,719.96 and 220,921.16 is: 330,603.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,978.24 : 529,719.96 = 220,921.16 : x
  2. Step 2: Convert to fraction form
    353,978.24/529,719.96 = 220,921.16/x
  3. Step 3: Cross multiply
    353,978.24x = 529,719.96 × 220,921.16
  4. Step 4: Simplify right side
    353,978.24x = 117,026,348,038.35
  5. Step 5: Solve for x
    x = 117,026,348,038.35/353,978.24
  6. Step 6: Final answer
    x = 330,603.23

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.