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Finding the Fourth Proportional to 426,636.94, 640,050.84 and 160,399.76

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Solution

The fourth proportional to 426,636.94, 640,050.84 and 160,399.76 is: 240,635.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,636.94 : 640,050.84 = 160,399.76 : x
  2. Step 2: Convert to fraction form
    426,636.94/640,050.84 = 160,399.76/x
  3. Step 3: Cross multiply
    426,636.94x = 640,050.84 × 160,399.76
  4. Step 4: Simplify right side
    426,636.94x = 102,664,001,123.80
  5. Step 5: Solve for x
    x = 102,664,001,123.80/426,636.94
  6. Step 6: Final answer
    x = 240,635.52

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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.