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Finding the Fourth Proportional to 505,640.24, 758,681.64 and 239,590.64

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Solution

The fourth proportional to 505,640.24, 758,681.64 and 239,590.64 is: 359,490.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,640.24 : 758,681.64 = 239,590.64 : x
  2. Step 2: Convert to fraction form
    505,640.24/758,681.64 = 239,590.64/x
  3. Step 3: Cross multiply
    505,640.24x = 758,681.64 × 239,590.64
  4. Step 4: Simplify right side
    505,640.24x = 181,773,019,683.85
  5. Step 5: Solve for x
    x = 181,773,019,683.85/505,640.24
  6. Step 6: Final answer
    x = 359,490.81

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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.