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Finding the Fourth Proportional to 612,134.75, 918,255.05 and 168,902.75

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Solution

The fourth proportional to 612,134.75, 918,255.05 and 168,902.75 is: 253,368.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,134.75 : 918,255.05 = 168,902.75 : x
  2. Step 2: Convert to fraction form
    612,134.75/918,255.05 = 168,902.75/x
  3. Step 3: Cross multiply
    612,134.75x = 918,255.05 × 168,902.75
  4. Step 4: Simplify right side
    612,134.75x = 155,095,803,146.39
  5. Step 5: Solve for x
    x = 155,095,803,146.39/612,134.75
  6. Step 6: Final answer
    x = 253,368.73

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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.