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Finding the Fourth Proportional to 583,355.25, 805,030.79 and 315,083.25

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Solution

The fourth proportional to 583,355.25, 805,030.79 and 315,083.25 is: 434,815.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    583,355.25 : 805,030.79 = 315,083.25 : x
  2. Step 2: Convert to fraction form
    583,355.25/805,030.79 = 315,083.25/x
  3. Step 3: Cross multiply
    583,355.25x = 805,030.79 × 315,083.25
  4. Step 4: Simplify right side
    583,355.25x = 253,651,716,087.85
  5. Step 5: Solve for x
    x = 253,651,716,087.85/583,355.25
  6. Step 6: Final answer
    x = 434,815.18

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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.