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Finding the Fourth Proportional to 242,670.60, 364,005.90 and 84,878.55

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Solution

The fourth proportional to 242,670.60, 364,005.90 and 84,878.55 is: 127,317.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,670.60 : 364,005.90 = 84,878.55 : x
  2. Step 2: Convert to fraction form
    242,670.60/364,005.90 = 84,878.55/x
  3. Step 3: Cross multiply
    242,670.60x = 364,005.90 × 84,878.55
  4. Step 4: Simplify right side
    242,670.60x = 30,896,292,983.45
  5. Step 5: Solve for x
    x = 30,896,292,983.45/242,670.60
  6. Step 6: Final answer
    x = 127,317.83

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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.