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Finding the Fourth Proportional to 353,140.60, 528,836.10 and 283,156.60

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Solution

The fourth proportional to 353,140.60, 528,836.10 and 283,156.60 is: 424,033.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,140.60 : 528,836.10 = 283,156.60 : x
  2. Step 2: Convert to fraction form
    353,140.60/528,836.10 = 283,156.60/x
  3. Step 3: Cross multiply
    353,140.60x = 528,836.10 × 283,156.60
  4. Step 4: Simplify right side
    353,140.60x = 149,743,432,033.26
  5. Step 5: Solve for x
    x = 149,743,432,033.26/353,140.60
  6. Step 6: Final answer
    x = 424,033.46

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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.