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Finding the Fourth Proportional to 340,458.70, 509,766.45 and 266,730.70

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Solution

The fourth proportional to 340,458.70, 509,766.45 and 266,730.70 is: 399,374.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,458.70 : 509,766.45 = 266,730.70 : x
  2. Step 2: Convert to fraction form
    340,458.70/509,766.45 = 266,730.70/x
  3. Step 3: Cross multiply
    340,458.70x = 509,766.45 × 266,730.70
  4. Step 4: Simplify right side
    340,458.70x = 135,970,362,045.02
  5. Step 5: Solve for x
    x = 135,970,362,045.02/340,458.70
  6. Step 6: Final answer
    x = 399,374.03

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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.