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Finding the Fourth Proportional to 316,742.46, 474,452.64 and 189,980.70

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Solution

The fourth proportional to 316,742.46, 474,452.64 and 189,980.70 is: 284,574.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,742.46 : 474,452.64 = 189,980.70 : x
  2. Step 2: Convert to fraction form
    316,742.46/474,452.64 = 189,980.70/x
  3. Step 3: Cross multiply
    316,742.46x = 474,452.64 × 189,980.70
  4. Step 4: Simplify right side
    316,742.46x = 90,136,844,664.05
  5. Step 5: Solve for x
    x = 90,136,844,664.05/316,742.46
  6. Step 6: Final answer
    x = 284,574.56

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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.