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Finding the Fourth Proportional to 442,154.37, 663,360.72 and 142,628.32

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Solution

The fourth proportional to 442,154.37, 663,360.72 and 142,628.32 is: 213,984.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,154.37 : 663,360.72 = 142,628.32 : x
  2. Step 2: Convert to fraction form
    442,154.37/663,360.72 = 142,628.32/x
  3. Step 3: Cross multiply
    442,154.37x = 663,360.72 × 142,628.32
  4. Step 4: Simplify right side
    442,154.37x = 94,614,025,047.59
  5. Step 5: Solve for x
    x = 94,614,025,047.59/442,154.37
  6. Step 6: Final answer
    x = 213,984.15

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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.