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Finding the Fourth Proportional to 318,308.68, 477,361.76 and 105,036.84

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Solution

The fourth proportional to 318,308.68, 477,361.76 and 105,036.84 is: 157,521.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,308.68 : 477,361.76 = 105,036.84 : x
  2. Step 2: Convert to fraction form
    318,308.68/477,361.76 = 105,036.84/x
  3. Step 3: Cross multiply
    318,308.68x = 477,361.76 × 105,036.84
  4. Step 4: Simplify right side
    318,308.68x = 50,140,571,475.46
  5. Step 5: Solve for x
    x = 50,140,571,475.46/318,308.68
  6. Step 6: Final answer
    x = 157,521.85

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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.