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Finding the Fourth Proportional to 318,485.10, 477,038.52 and 149,752.58

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Solution

The fourth proportional to 318,485.10, 477,038.52 and 149,752.58 is: 224,304.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,485.10 : 477,038.52 = 149,752.58 : x
  2. Step 2: Convert to fraction form
    318,485.10/477,038.52 = 149,752.58/x
  3. Step 3: Cross multiply
    318,485.10x = 477,038.52 × 149,752.58
  4. Step 4: Simplify right side
    318,485.10x = 71,437,749,129.38
  5. Step 5: Solve for x
    x = 71,437,749,129.38/318,485.10
  6. Step 6: Final answer
    x = 224,304.84

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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.