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Finding the Fourth Proportional to 318,605.33, 477,838.65 and 105,322.85

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Solution

The fourth proportional to 318,605.33, 477,838.65 and 105,322.85 is: 157,961.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,605.33 : 477,838.65 = 105,322.85 : x
  2. Step 2: Convert to fraction form
    318,605.33/477,838.65 = 105,322.85/x
  3. Step 3: Cross multiply
    318,605.33x = 477,838.65 × 105,322.85
  4. Step 4: Simplify right side
    318,605.33x = 50,327,326,068.96
  5. Step 5: Solve for x
    x = 50,327,326,068.96/318,605.33
  6. Step 6: Final answer
    x = 157,961.35

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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.