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Finding the Fourth Proportional to 425,720.34, 638,580.50 and 110,176.32

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Solution

The fourth proportional to 425,720.34, 638,580.50 and 110,176.32 is: 165,264.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,720.34 : 638,580.50 = 110,176.32 : x
  2. Step 2: Convert to fraction form
    425,720.34/638,580.50 = 110,176.32/x
  3. Step 3: Cross multiply
    425,720.34x = 638,580.50 × 110,176.32
  4. Step 4: Simplify right side
    425,720.34x = 70,356,449,513.76
  5. Step 5: Solve for x
    x = 70,356,449,513.76/425,720.34
  6. Step 6: Final answer
    x = 165,264.48

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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.