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Finding the Fourth Proportional to 266,728.80, 368,120.56 and 153,556.32

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Solution

The fourth proportional to 266,728.80, 368,120.56 and 153,556.32 is: 211,927.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,728.80 : 368,120.56 = 153,556.32 : x
  2. Step 2: Convert to fraction form
    266,728.80/368,120.56 = 153,556.32/x
  3. Step 3: Cross multiply
    266,728.80x = 368,120.56 × 153,556.32
  4. Step 4: Simplify right side
    266,728.80x = 56,527,238,509.94
  5. Step 5: Solve for x
    x = 56,527,238,509.94/266,728.80
  6. Step 6: Final answer
    x = 211,927.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.