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Finding the Fourth Proportional to 421,801.12, 582,096.98 and 258,454.80

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Solution

The fourth proportional to 421,801.12, 582,096.98 and 258,454.80 is: 356,674.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,801.12 : 582,096.98 = 258,454.80 : x
  2. Step 2: Convert to fraction form
    421,801.12/582,096.98 = 258,454.80/x
  3. Step 3: Cross multiply
    421,801.12x = 582,096.98 × 258,454.80
  4. Step 4: Simplify right side
    421,801.12x = 150,445,759,192.64
  5. Step 5: Solve for x
    x = 150,445,759,192.64/421,801.12
  6. Step 6: Final answer
    x = 356,674.63

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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.