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Finding the Fourth Proportional to 316,120.80, 474,082.48 and 105,709.60

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Solution

The fourth proportional to 316,120.80, 474,082.48 and 105,709.60 is: 158,531.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,120.80 : 474,082.48 = 105,709.60 : x
  2. Step 2: Convert to fraction form
    316,120.80/474,082.48 = 105,709.60/x
  3. Step 3: Cross multiply
    316,120.80x = 474,082.48 × 105,709.60
  4. Step 4: Simplify right side
    316,120.80x = 50,115,069,327.81
  5. Step 5: Solve for x
    x = 50,115,069,327.81/316,120.80
  6. Step 6: Final answer
    x = 158,531.39

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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.