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Finding the Fourth Proportional to 488,380.80, 731,145.60 and 348,412.80

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Solution

The fourth proportional to 488,380.80, 731,145.60 and 348,412.80 is: 521,602.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,380.80 : 731,145.60 = 348,412.80 : x
  2. Step 2: Convert to fraction form
    488,380.80/731,145.60 = 348,412.80/x
  3. Step 3: Cross multiply
    488,380.80x = 731,145.60 × 348,412.80
  4. Step 4: Simplify right side
    488,380.80x = 254,740,485,703.68
  5. Step 5: Solve for x
    x = 254,740,485,703.68/488,380.80
  6. Step 6: Final answer
    x = 521,602.17

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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.