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Finding the Fourth Proportional to 354,569.55, 489,415.14 and 218,646.15

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Solution

The fourth proportional to 354,569.55, 489,415.14 and 218,646.15 is: 301,799.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,569.55 : 489,415.14 = 218,646.15 : x
  2. Step 2: Convert to fraction form
    354,569.55/489,415.14 = 218,646.15/x
  3. Step 3: Cross multiply
    354,569.55x = 489,415.14 × 218,646.15
  4. Step 4: Simplify right side
    354,569.55x = 107,008,736,112.71
  5. Step 5: Solve for x
    x = 107,008,736,112.71/354,569.55
  6. Step 6: Final answer
    x = 301,799.00

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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.