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Finding the Fourth Proportional to 501,411.95, 691,943.40 and 271,964.31

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Solution

The fourth proportional to 501,411.95, 691,943.40 and 271,964.31 is: 375,307.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,411.95 : 691,943.40 = 271,964.31 : x
  2. Step 2: Convert to fraction form
    501,411.95/691,943.40 = 271,964.31/x
  3. Step 3: Cross multiply
    501,411.95x = 691,943.40 × 271,964.31
  4. Step 4: Simplify right side
    501,411.95x = 188,183,909,340.05
  5. Step 5: Solve for x
    x = 188,183,909,340.05/501,411.95
  6. Step 6: Final answer
    x = 375,307.99

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1.5x scale

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.