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Finding the Fourth Proportional to 354,061.35, 488,606.85 and 210,827.43

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Solution

The fourth proportional to 354,061.35, 488,606.85 and 210,827.43 is: 290,943.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,061.35 : 488,606.85 = 210,827.43 : x
  2. Step 2: Convert to fraction form
    354,061.35/488,606.85 = 210,827.43/x
  3. Step 3: Cross multiply
    354,061.35x = 488,606.85 × 210,827.43
  4. Step 4: Simplify right side
    354,061.35x = 103,011,726,465.90
  5. Step 5: Solve for x
    x = 103,011,726,465.90/354,061.35
  6. Step 6: Final answer
    x = 290,943.16

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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.