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Finding the Fourth Proportional to 423,907.24, 636,107.10 and 139,804.60

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Solution

The fourth proportional to 423,907.24, 636,107.10 and 139,804.60 is: 209,788.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,907.24 : 636,107.10 = 139,804.60 : x
  2. Step 2: Convert to fraction form
    423,907.24/636,107.10 = 139,804.60/x
  3. Step 3: Cross multiply
    423,907.24x = 636,107.10 × 139,804.60
  4. Step 4: Simplify right side
    423,907.24x = 88,930,698,672.66
  5. Step 5: Solve for x
    x = 88,930,698,672.66/423,907.24
  6. Step 6: Final answer
    x = 209,788.11

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1.5x scale

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.