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Finding the Fourth Proportional to 425,568.60, 638,301.06 and 109,999.08

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Solution

The fourth proportional to 425,568.60, 638,301.06 and 109,999.08 is: 164,985.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,568.60 : 638,301.06 = 109,999.08 : x
  2. Step 2: Convert to fraction form
    425,568.60/638,301.06 = 109,999.08/x
  3. Step 3: Cross multiply
    425,568.60x = 638,301.06 × 109,999.08
  4. Step 4: Simplify right side
    425,568.60x = 70,212,529,363.02
  5. Step 5: Solve for x
    x = 70,212,529,363.02/425,568.60
  6. Step 6: Final answer
    x = 164,985.22

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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.