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Finding the Fourth Proportional to 443,959.48, 666,038.94 and 128,440.90

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Solution

The fourth proportional to 443,959.48, 666,038.94 and 128,440.90 is: 192,690.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,959.48 : 666,038.94 = 128,440.90 : x
  2. Step 2: Convert to fraction form
    443,959.48/666,038.94 = 128,440.90/x
  3. Step 3: Cross multiply
    443,959.48x = 666,038.94 × 128,440.90
  4. Step 4: Simplify right side
    443,959.48x = 85,546,640,888.65
  5. Step 5: Solve for x
    x = 85,546,640,888.65/443,959.48
  6. Step 6: Final answer
    x = 192,690.20

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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.