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Finding the Fourth Proportional to 340,907.50, 511,435.07 and 130,545.45

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Solution

The fourth proportional to 340,907.50, 511,435.07 and 130,545.45 is: 195,846.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,907.50 : 511,435.07 = 130,545.45 : x
  2. Step 2: Convert to fraction form
    340,907.50/511,435.07 = 130,545.45/x
  3. Step 3: Cross multiply
    340,907.50x = 511,435.07 × 130,545.45
  4. Step 4: Simplify right side
    340,907.50x = 66,765,521,358.93
  5. Step 5: Solve for x
    x = 66,765,521,358.93/340,907.50
  6. Step 6: Final answer
    x = 195,846.44

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1.5x scale

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.