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Finding the Fourth Proportional to 575,163.60, 793,726.56 and 320,509.20

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Solution

The fourth proportional to 575,163.60, 793,726.56 and 320,509.20 is: 442,303.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    575,163.60 : 793,726.56 = 320,509.20 : x
  2. Step 2: Convert to fraction form
    575,163.60/793,726.56 = 320,509.20/x
  3. Step 3: Cross multiply
    575,163.60x = 793,726.56 × 320,509.20
  4. Step 4: Simplify right side
    575,163.60x = 254,396,664,764.35
  5. Step 5: Solve for x
    x = 254,396,664,764.35/575,163.60
  6. Step 6: Final answer
    x = 442,303.14

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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.