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Finding the Fourth Proportional to 348,539.80, 522,798.90 and 99,221.80

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Solution

The fourth proportional to 348,539.80, 522,798.90 and 99,221.80 is: 148,829.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,539.80 : 522,798.90 = 99,221.80 : x
  2. Step 2: Convert to fraction form
    348,539.80/522,798.90 = 99,221.80/x
  3. Step 3: Cross multiply
    348,539.80x = 522,798.90 × 99,221.80
  4. Step 4: Simplify right side
    348,539.80x = 51,873,047,896.02
  5. Step 5: Solve for x
    x = 51,873,047,896.02/348,539.80
  6. Step 6: Final answer
    x = 148,829.63

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1.5x scale

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.