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Finding the Fourth Proportional to 425,922.55, 638,808.89 and 155,994.91

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Solution

The fourth proportional to 425,922.55, 638,808.89 and 155,994.91 is: 233,964.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,922.55 : 638,808.89 = 155,994.91 : x
  2. Step 2: Convert to fraction form
    425,922.55/638,808.89 = 155,994.91/x
  3. Step 3: Cross multiply
    425,922.55x = 638,808.89 × 155,994.91
  4. Step 4: Simplify right side
    425,922.55x = 99,650,935,302.75
  5. Step 5: Solve for x
    x = 99,650,935,302.75/425,922.55
  6. Step 6: Final answer
    x = 233,964.92

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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.