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Finding the Fourth Proportional to 316,130.89, 474,530.52 and 308,991.70

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Solution

The fourth proportional to 316,130.89, 474,530.52 and 308,991.70 is: 463,814.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,130.89 : 474,530.52 = 308,991.70 : x
  2. Step 2: Convert to fraction form
    316,130.89/474,530.52 = 308,991.70/x
  3. Step 3: Cross multiply
    316,130.89x = 474,530.52 × 308,991.70
  4. Step 4: Simplify right side
    316,130.89x = 146,625,992,076.68
  5. Step 5: Solve for x
    x = 146,625,992,076.68/316,130.89
  6. Step 6: Final answer
    x = 463,814.19

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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.