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Finding the Fourth Proportional to 505,728.19, 758,643.03 and 145,907.95

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Solution

The fourth proportional to 505,728.19, 758,643.03 and 145,907.95 is: 218,876.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,728.19 : 758,643.03 = 145,907.95 : x
  2. Step 2: Convert to fraction form
    505,728.19/758,643.03 = 145,907.95/x
  3. Step 3: Cross multiply
    505,728.19x = 758,643.03 × 145,907.95
  4. Step 4: Simplify right side
    505,728.19x = 110,692,050,264.68
  5. Step 5: Solve for x
    x = 110,692,050,264.68/505,728.19
  6. Step 6: Final answer
    x = 218,876.57

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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.