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Finding the Fourth Proportional to 422,408.84, 633,560.40 and 138,075.59

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Solution

The fourth proportional to 422,408.84, 633,560.40 and 138,075.59 is: 207,096.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,408.84 : 633,560.40 = 138,075.59 : x
  2. Step 2: Convert to fraction form
    422,408.84/633,560.40 = 138,075.59/x
  3. Step 3: Cross multiply
    422,408.84x = 633,560.40 × 138,075.59
  4. Step 4: Simplify right side
    422,408.84x = 87,479,226,030.64
  5. Step 5: Solve for x
    x = 87,479,226,030.64/422,408.84
  6. Step 6: Final answer
    x = 207,096.11

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1.5x scale

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.