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Finding the Fourth Proportional to 262,775.90, 392,723.87 and 191,847.89

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Solution

The fourth proportional to 262,775.90, 392,723.87 and 191,847.89 is: 286,720.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,775.90 : 392,723.87 = 191,847.89 : x
  2. Step 2: Convert to fraction form
    262,775.90/392,723.87 = 191,847.89/x
  3. Step 3: Cross multiply
    262,775.90x = 392,723.87 × 191,847.89
  4. Step 4: Simplify right side
    262,775.90x = 75,343,242,889.28
  5. Step 5: Solve for x
    x = 75,343,242,889.28/262,775.90
  6. Step 6: Final answer
    x = 286,720.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.