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Finding the Fourth Proportional to 556,090.20, 767,212.02 and 329,808.60

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Solution

The fourth proportional to 556,090.20, 767,212.02 and 329,808.60 is: 455,021.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,090.20 : 767,212.02 = 329,808.60 : x
  2. Step 2: Convert to fraction form
    556,090.20/767,212.02 = 329,808.60/x
  3. Step 3: Cross multiply
    556,090.20x = 767,212.02 × 329,808.60
  4. Step 4: Simplify right side
    556,090.20x = 253,033,122,219.37
  5. Step 5: Solve for x
    x = 253,033,122,219.37/556,090.20
  6. Step 6: Final answer
    x = 455,021.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.