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Finding the Fourth Proportional to 316,405.56, 474,684.48 and 129,417.60

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Solution

The fourth proportional to 316,405.56, 474,684.48 and 129,417.60 is: 194,157.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,405.56 : 474,684.48 = 129,417.60 : x
  2. Step 2: Convert to fraction form
    316,405.56/474,684.48 = 129,417.60/x
  3. Step 3: Cross multiply
    316,405.56x = 474,684.48 × 129,417.60
  4. Step 4: Simplify right side
    316,405.56x = 61,432,526,158.85
  5. Step 5: Solve for x
    x = 61,432,526,158.85/316,405.56
  6. Step 6: Final answer
    x = 194,157.54

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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.