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Finding the Fourth Proportional to 316,128.89, 474,527.52 and 308,989.70

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Solution

The fourth proportional to 316,128.89, 474,527.52 and 308,989.70 is: 463,811.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,128.89 : 474,527.52 = 308,989.70 : x
  2. Step 2: Convert to fraction form
    316,128.89/474,527.52 = 308,989.70/x
  3. Step 3: Cross multiply
    316,128.89x = 474,527.52 × 308,989.70
  4. Step 4: Simplify right side
    316,128.89x = 146,624,113,673.91
  5. Step 5: Solve for x
    x = 146,624,113,673.91/316,128.89
  6. Step 6: Final answer
    x = 463,811.19

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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.