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Finding the Fourth Proportional to 348,580.80, 522,860.40 and 99,262.80

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Solution

The fourth proportional to 348,580.80, 522,860.40 and 99,262.80 is: 148,891.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,580.80 : 522,860.40 = 99,262.80 : x
  2. Step 2: Convert to fraction form
    348,580.80/522,860.40 = 99,262.80/x
  3. Step 3: Cross multiply
    348,580.80x = 522,860.40 × 99,262.80
  4. Step 4: Simplify right side
    348,580.80x = 51,900,587,313.12
  5. Step 5: Solve for x
    x = 51,900,587,313.12/348,580.80
  6. Step 6: Final answer
    x = 148,891.12

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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.