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Finding the Fourth Proportional to 266,963.06, 368,426.13 and 153,783.86

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Solution

The fourth proportional to 266,963.06, 368,426.13 and 153,783.86 is: 212,231.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,963.06 : 368,426.13 = 153,783.86 : x
  2. Step 2: Convert to fraction form
    266,963.06/368,426.13 = 153,783.86/x
  3. Step 3: Cross multiply
    266,963.06x = 368,426.13 × 153,783.86
  4. Step 4: Simplify right side
    266,963.06x = 56,657,992,396.26
  5. Step 5: Solve for x
    x = 56,657,992,396.26/266,963.06
  6. Step 6: Final answer
    x = 212,231.58

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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.