Home / 426,962.21-640,492.52-111,443.72

Finding the Fourth Proportional to 426,962.21, 640,492.52 and 111,443.72

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Solution

The fourth proportional to 426,962.21, 640,492.52 and 111,443.72 is: 167,178.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,962.21 : 640,492.52 = 111,443.72 : x
  2. Step 2: Convert to fraction form
    426,962.21/640,492.52 = 111,443.72/x
  3. Step 3: Cross multiply
    426,962.21x = 640,492.52 × 111,443.72
  4. Step 4: Simplify right side
    426,962.21x = 71,378,865,301.29
  5. Step 5: Solve for x
    x = 71,378,865,301.29/426,962.21
  6. Step 6: Final answer
    x = 167,178.42

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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.