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Finding the Fourth Proportional to 348,539.30, 522,798.15 and 99,221.30

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Solution

The fourth proportional to 348,539.30, 522,798.15 and 99,221.30 is: 148,828.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,539.30 : 522,798.15 = 99,221.30 : x
  2. Step 2: Convert to fraction form
    348,539.30/522,798.15 = 99,221.30/x
  3. Step 3: Cross multiply
    348,539.30x = 522,798.15 × 99,221.30
  4. Step 4: Simplify right side
    348,539.30x = 51,872,712,080.60
  5. Step 5: Solve for x
    x = 51,872,712,080.60/348,539.30
  6. Step 6: Final answer
    x = 148,828.88

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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.