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Finding the Fourth Proportional to 405,360.48, 559,320.48 and 254,389.44

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Solution

The fourth proportional to 405,360.48, 559,320.48 and 254,389.44 is: 351,009.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,360.48 : 559,320.48 = 254,389.44 : x
  2. Step 2: Convert to fraction form
    405,360.48/559,320.48 = 254,389.44/x
  3. Step 3: Cross multiply
    405,360.48x = 559,320.48 × 254,389.44
  4. Step 4: Simplify right side
    405,360.48x = 142,285,223,687.73
  5. Step 5: Solve for x
    x = 142,285,223,687.73/405,360.48
  6. Step 6: Final answer
    x = 351,009.12

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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.