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Finding the Fourth Proportional to 403,723.80, 604,929.60 and 253,695.60

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Solution

The fourth proportional to 403,723.80, 604,929.60 and 253,695.60 is: 380,131.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,723.80 : 604,929.60 = 253,695.60 : x
  2. Step 2: Convert to fraction form
    403,723.80/604,929.60 = 253,695.60/x
  3. Step 3: Cross multiply
    403,723.80x = 604,929.60 × 253,695.60
  4. Step 4: Simplify right side
    403,723.80x = 153,467,977,829.76
  5. Step 5: Solve for x
    x = 153,467,977,829.76/403,723.80
  6. Step 6: Final answer
    x = 380,131.11

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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.