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Finding the Fourth Proportional to 369,889.31, 510,447.45 and 256,777.67

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Solution

The fourth proportional to 369,889.31, 510,447.45 and 256,777.67 is: 354,353.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,889.31 : 510,447.45 = 256,777.67 : x
  2. Step 2: Convert to fraction form
    369,889.31/510,447.45 = 256,777.67/x
  3. Step 3: Cross multiply
    369,889.31x = 510,447.45 × 256,777.67
  4. Step 4: Simplify right side
    369,889.31x = 131,071,504,316.20
  5. Step 5: Solve for x
    x = 131,071,504,316.20/369,889.31
  6. Step 6: Final answer
    x = 354,353.32

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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.