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Finding the Fourth Proportional to 421,779.16, 582,055.24 and 230,792.56

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Solution

The fourth proportional to 421,779.16, 582,055.24 and 230,792.56 is: 318,493.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,779.16 : 582,055.24 = 230,792.56 : x
  2. Step 2: Convert to fraction form
    421,779.16/582,055.24 = 230,792.56/x
  3. Step 3: Cross multiply
    421,779.16x = 582,055.24 × 230,792.56
  4. Step 4: Simplify right side
    421,779.16x = 134,334,018,901.01
  5. Step 5: Solve for x
    x = 134,334,018,901.01/421,779.16
  6. Step 6: Final answer
    x = 318,493.73

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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.