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Finding the Fourth Proportional to 153,957.70, 215,015.90 and 153,957.70

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Solution

The fourth proportional to 153,957.70, 215,015.90 and 153,957.70 is: 215,015.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,957.70 : 215,015.90 = 153,957.70 : x
  2. Step 2: Convert to fraction form
    153,957.70/215,015.90 = 153,957.70/x
  3. Step 3: Cross multiply
    153,957.70x = 215,015.90 × 153,957.70
  4. Step 4: Simplify right side
    153,957.70x = 33,103,353,427.43
  5. Step 5: Solve for x
    x = 33,103,353,427.43/153,957.70
  6. Step 6: Final answer
    x = 215,015.90

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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.