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Finding the Fourth Proportional to 369,574.94, 509,551.31 and 308,409.25

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Solution

The fourth proportional to 369,574.94, 509,551.31 and 308,409.25 is: 425,219.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,574.94 : 509,551.31 = 308,409.25 : x
  2. Step 2: Convert to fraction form
    369,574.94/509,551.31 = 308,409.25/x
  3. Step 3: Cross multiply
    369,574.94x = 509,551.31 × 308,409.25
  4. Step 4: Simplify right side
    369,574.94x = 157,150,334,537.69
  5. Step 5: Solve for x
    x = 157,150,334,537.69/369,574.94
  6. Step 6: Final answer
    x = 425,219.14

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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.