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Finding the Fourth Proportional to 612,152.51, 918,230.85 and 212,796.59

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Solution

The fourth proportional to 612,152.51, 918,230.85 and 212,796.59 is: 319,195.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,152.51 : 918,230.85 = 212,796.59 : x
  2. Step 2: Convert to fraction form
    612,152.51/918,230.85 = 212,796.59/x
  3. Step 3: Cross multiply
    612,152.51x = 918,230.85 × 212,796.59
  4. Step 4: Simplify right side
    612,152.51x = 195,396,389,121.65
  5. Step 5: Solve for x
    x = 195,396,389,121.65/612,152.51
  6. Step 6: Final answer
    x = 319,195.60

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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.