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Finding the Fourth Proportional to 318,038.32, 477,079.56 and 107,605.12

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Solution

The fourth proportional to 318,038.32, 477,079.56 and 107,605.12 is: 161,415.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,038.32 : 477,079.56 = 107,605.12 : x
  2. Step 2: Convert to fraction form
    318,038.32/477,079.56 = 107,605.12/x
  3. Step 3: Cross multiply
    318,038.32x = 477,079.56 × 107,605.12
  4. Step 4: Simplify right side
    318,038.32x = 51,336,203,303.35
  5. Step 5: Solve for x
    x = 51,336,203,303.35/318,038.32
  6. Step 6: Final answer
    x = 161,415.15

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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.