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Finding the Fourth Proportional to 318,282.53, 477,482.82 and 105,065.29

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Solution

The fourth proportional to 318,282.53, 477,482.82 and 105,065.29 is: 157,617.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,282.53 : 477,482.82 = 105,065.29 : x
  2. Step 2: Convert to fraction form
    318,282.53/477,482.82 = 105,065.29/x
  3. Step 3: Cross multiply
    318,282.53x = 477,482.82 × 105,065.29
  4. Step 4: Simplify right side
    318,282.53x = 50,166,871,944.17
  5. Step 5: Solve for x
    x = 50,166,871,944.17/318,282.53
  6. Step 6: Final answer
    x = 157,617.42

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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.