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Finding the Fourth Proportional to 351,038.79, 484,435.89 and 215,073

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Solution

The fourth proportional to 351,038.79, 484,435.89 and 215,073 is: 296,802.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,038.79 : 484,435.89 = 215,073 : x
  2. Step 2: Convert to fraction form
    351,038.79/484,435.89 = 215,073/x
  3. Step 3: Cross multiply
    351,038.79x = 484,435.89 × 215,073
  4. Step 4: Simplify right side
    351,038.79x = 104,189,080,169.97
  5. Step 5: Solve for x
    x = 104,189,080,169.97/351,038.79
  6. Step 6: Final answer
    x = 296,802.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.