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Finding the Fourth Proportional to 605,015.89, 907,312.29 and 178,438.57

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Solution

The fourth proportional to 605,015.89, 907,312.29 and 178,438.57 is: 267,595.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,015.89 : 907,312.29 = 178,438.57 : x
  2. Step 2: Convert to fraction form
    605,015.89/907,312.29 = 178,438.57/x
  3. Step 3: Cross multiply
    605,015.89x = 907,312.29 × 178,438.57
  4. Step 4: Simplify right side
    605,015.89x = 161,899,507,571.03
  5. Step 5: Solve for x
    x = 161,899,507,571.03/605,015.89
  6. Step 6: Final answer
    x = 267,595.46

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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.