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Finding the Fourth Proportional to 353,376.60, 528,768.90 and 260,064.60

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Solution

The fourth proportional to 353,376.60, 528,768.90 and 260,064.60 is: 389,143.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,376.60 : 528,768.90 = 260,064.60 : x
  2. Step 2: Convert to fraction form
    353,376.60/528,768.90 = 260,064.60/x
  3. Step 3: Cross multiply
    353,376.60x = 528,768.90 × 260,064.60
  4. Step 4: Simplify right side
    353,376.60x = 137,514,072,470.94
  5. Step 5: Solve for x
    x = 137,514,072,470.94/353,376.60
  6. Step 6: Final answer
    x = 389,143.12

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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.