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Finding the Fourth Proportional to 366,927.90, 550,391.85 and 260,639.70

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Solution

The fourth proportional to 366,927.90, 550,391.85 and 260,639.70 is: 390,959.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,927.90 : 550,391.85 = 260,639.70 : x
  2. Step 2: Convert to fraction form
    366,927.90/550,391.85 = 260,639.70/x
  3. Step 3: Cross multiply
    366,927.90x = 550,391.85 × 260,639.70
  4. Step 4: Simplify right side
    366,927.90x = 143,453,966,666.45
  5. Step 5: Solve for x
    x = 143,453,966,666.45/366,927.90
  6. Step 6: Final answer
    x = 390,959.55

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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.