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Finding the Fourth Proportional to 154,485.10, 216,745.70 and 154,485.10

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Solution

The fourth proportional to 154,485.10, 216,745.70 and 154,485.10 is: 216,745.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,485.10 : 216,745.70 = 154,485.10 : x
  2. Step 2: Convert to fraction form
    154,485.10/216,745.70 = 154,485.10/x
  3. Step 3: Cross multiply
    154,485.10x = 216,745.70 × 154,485.10
  4. Step 4: Simplify right side
    154,485.10x = 33,483,981,139.07
  5. Step 5: Solve for x
    x = 33,483,981,139.07/154,485.10
  6. Step 6: Final answer
    x = 216,745.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.