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Finding the Fourth Proportional to 366,943.40, 550,415.10 and 260,655.20

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Solution

The fourth proportional to 366,943.40, 550,415.10 and 260,655.20 is: 390,982.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,943.40 : 550,415.10 = 260,655.20 : x
  2. Step 2: Convert to fraction form
    366,943.40/550,415.10 = 260,655.20/x
  3. Step 3: Cross multiply
    366,943.40x = 550,415.10 × 260,655.20
  4. Step 4: Simplify right side
    366,943.40x = 143,468,557,973.52
  5. Step 5: Solve for x
    x = 143,468,557,973.52/366,943.40
  6. Step 6: Final answer
    x = 390,982.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.