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Finding the Fourth Proportional to 353,878.60, 529,521.90 and 260,566.60

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Solution

The fourth proportional to 353,878.60, 529,521.90 and 260,566.60 is: 389,895.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,878.60 : 529,521.90 = 260,566.60 : x
  2. Step 2: Convert to fraction form
    353,878.60/529,521.90 = 260,566.60/x
  3. Step 3: Cross multiply
    353,878.60x = 529,521.90 × 260,566.60
  4. Step 4: Simplify right side
    353,878.60x = 137,975,721,108.54
  5. Step 5: Solve for x
    x = 137,975,721,108.54/353,878.60
  6. Step 6: Final answer
    x = 389,895.63

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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.