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Finding the Fourth Proportional to 405,331.48, 559,280.46 and 254,360.44

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Solution

The fourth proportional to 405,331.48, 559,280.46 and 254,360.44 is: 350,969.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,331.48 : 559,280.46 = 254,360.44 : x
  2. Step 2: Convert to fraction form
    405,331.48/559,280.46 = 254,360.44/x
  3. Step 3: Cross multiply
    405,331.48x = 559,280.46 × 254,360.44
  4. Step 4: Simplify right side
    405,331.48x = 142,258,823,889.00
  5. Step 5: Solve for x
    x = 142,258,823,889.00/405,331.48
  6. Step 6: Final answer
    x = 350,969.10

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1.5x scale

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.