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Finding the Fourth Proportional to 612,135.75, 918,256.55 and 168,903.75

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Solution

The fourth proportional to 612,135.75, 918,256.55 and 168,903.75 is: 253,370.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,135.75 : 918,256.55 = 168,903.75 : x
  2. Step 2: Convert to fraction form
    612,135.75/918,256.55 = 168,903.75/x
  3. Step 3: Cross multiply
    612,135.75x = 918,256.55 × 168,903.75
  4. Step 4: Simplify right side
    612,135.75x = 155,096,974,757.06
  5. Step 5: Solve for x
    x = 155,096,974,757.06/612,135.75
  6. Step 6: Final answer
    x = 253,370.23

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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.