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Finding the Fourth Proportional to 423,830.90, 635,696.00 and 139,450.93

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Solution

The fourth proportional to 423,830.90, 635,696.00 and 139,450.93 is: 209,159.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,830.90 : 635,696.00 = 139,450.93 : x
  2. Step 2: Convert to fraction form
    423,830.90/635,696.00 = 139,450.93/x
  3. Step 3: Cross multiply
    423,830.90x = 635,696.00 × 139,450.93
  4. Step 4: Simplify right side
    423,830.90x = 88,648,400,209.52
  5. Step 5: Solve for x
    x = 88,648,400,209.52/423,830.90
  6. Step 6: Final answer
    x = 209,159.83

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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.