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Finding the Fourth Proportional to 423,497.94, 635,113.08 and 139,141.80

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Solution

The fourth proportional to 423,497.94, 635,113.08 and 139,141.80 is: 208,668.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,497.94 : 635,113.08 = 139,141.80 : x
  2. Step 2: Convert to fraction form
    423,497.94/635,113.08 = 139,141.80/x
  3. Step 3: Cross multiply
    423,497.94x = 635,113.08 × 139,141.80
  4. Step 4: Simplify right side
    423,497.94x = 88,370,777,154.74
  5. Step 5: Solve for x
    x = 88,370,777,154.74/423,497.94
  6. Step 6: Final answer
    x = 208,668.73

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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.