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Finding the Fourth Proportional to 295,898.24, 443,782.40 and 85,490.40

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Solution

The fourth proportional to 295,898.24, 443,782.40 and 85,490.40 is: 128,216.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    295,898.24 : 443,782.40 = 85,490.40 : x
  2. Step 2: Convert to fraction form
    295,898.24/443,782.40 = 85,490.40/x
  3. Step 3: Cross multiply
    295,898.24x = 443,782.40 × 85,490.40
  4. Step 4: Simplify right side
    295,898.24x = 37,939,134,888.96
  5. Step 5: Solve for x
    x = 37,939,134,888.96/295,898.24
  6. Step 6: Final answer
    x = 128,216.83

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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.