Home / 494,824.16-742,284.80-139,840.80

Finding the Fourth Proportional to 494,824.16, 742,284.80 and 139,840.80

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Solution

The fourth proportional to 494,824.16, 742,284.80 and 139,840.80 is: 209,774.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,824.16 : 742,284.80 = 139,840.80 : x
  2. Step 2: Convert to fraction form
    494,824.16/742,284.80 = 139,840.80/x
  3. Step 3: Cross multiply
    494,824.16x = 742,284.80 × 139,840.80
  4. Step 4: Simplify right side
    494,824.16x = 103,801,700,259.84
  5. Step 5: Solve for x
    x = 103,801,700,259.84/494,824.16
  6. Step 6: Final answer
    x = 209,774.92

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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.