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Finding the Fourth Proportional to 353,352.60, 528,732.90 and 260,040.60

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Solution

The fourth proportional to 353,352.60, 528,732.90 and 260,040.60 is: 389,107.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,352.60 : 528,732.90 = 260,040.60 : x
  2. Step 2: Convert to fraction form
    353,352.60/528,732.90 = 260,040.60/x
  3. Step 3: Cross multiply
    353,352.60x = 528,732.90 × 260,040.60
  4. Step 4: Simplify right side
    353,352.60x = 137,492,020,555.74
  5. Step 5: Solve for x
    x = 137,492,020,555.74/353,352.60
  6. Step 6: Final answer
    x = 389,107.14

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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.