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Finding the Fourth Proportional to 295,790.72, 443,598.48 and 85,430.48

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Solution

The fourth proportional to 295,790.72, 443,598.48 and 85,430.48 is: 128,120.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    295,790.72 : 443,598.48 = 85,430.48 : x
  2. Step 2: Convert to fraction form
    295,790.72/443,598.48 = 85,430.48/x
  3. Step 3: Cross multiply
    295,790.72x = 443,598.48 × 85,430.48
  4. Step 4: Simplify right side
    295,790.72x = 37,896,831,073.67
  5. Step 5: Solve for x
    x = 37,896,831,073.67/295,790.72
  6. Step 6: Final answer
    x = 128,120.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.