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Finding the Fourth Proportional to 573,215.81, 791,028.86 and 315,087.17

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Solution

The fourth proportional to 573,215.81, 791,028.86 and 315,087.17 is: 434,815.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,215.81 : 791,028.86 = 315,087.17 : x
  2. Step 2: Convert to fraction form
    573,215.81/791,028.86 = 315,087.17/x
  3. Step 3: Cross multiply
    573,215.81x = 791,028.86 × 315,087.17
  4. Step 4: Simplify right side
    573,215.81x = 249,243,039,355.15
  5. Step 5: Solve for x
    x = 249,243,039,355.15/573,215.81
  6. Step 6: Final answer
    x = 434,815.36

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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.