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Finding the Fourth Proportional to 353,293.60, 529,162.80 and 212,807.20

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Solution

The fourth proportional to 353,293.60, 529,162.80 and 212,807.20 is: 318,742.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,293.60 : 529,162.80 = 212,807.20 : x
  2. Step 2: Convert to fraction form
    353,293.60/529,162.80 = 212,807.20/x
  3. Step 3: Cross multiply
    353,293.60x = 529,162.80 × 212,807.20
  4. Step 4: Simplify right side
    353,293.60x = 112,609,653,812.16
  5. Step 5: Solve for x
    x = 112,609,653,812.16/353,293.60
  6. Step 6: Final answer
    x = 318,742.41

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Why These Related Problems?

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