Home / 394,871.78-592,307.19-128,631.86

Finding the Fourth Proportional to 394,871.78, 592,307.19 and 128,631.86

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Solution

The fourth proportional to 394,871.78, 592,307.19 and 128,631.86 is: 192,947.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,871.78 : 592,307.19 = 128,631.86 : x
  2. Step 2: Convert to fraction form
    394,871.78/592,307.19 = 128,631.86/x
  3. Step 3: Cross multiply
    394,871.78x = 592,307.19 × 128,631.86
  4. Step 4: Simplify right side
    394,871.78x = 76,189,575,541.07
  5. Step 5: Solve for x
    x = 76,189,575,541.07/394,871.78
  6. Step 6: Final answer
    x = 192,947.63

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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.