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Finding the Fourth Proportional to 366,948.90, 550,423.35 and 340,376.85

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Solution

The fourth proportional to 366,948.90, 550,423.35 and 340,376.85 is: 510,565.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,948.90 : 550,423.35 = 340,376.85 : x
  2. Step 2: Convert to fraction form
    366,948.90/550,423.35 = 340,376.85/x
  3. Step 3: Cross multiply
    366,948.90x = 550,423.35 × 340,376.85
  4. Step 4: Simplify right side
    366,948.90x = 187,351,366,039.45
  5. Step 5: Solve for x
    x = 187,351,366,039.45/366,948.90
  6. Step 6: Final answer
    x = 510,565.28

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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.