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Finding the Fourth Proportional to 243,054.40, 364,581.60 and 154,019.20

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Solution

The fourth proportional to 243,054.40, 364,581.60 and 154,019.20 is: 231,028.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,054.40 : 364,581.60 = 154,019.20 : x
  2. Step 2: Convert to fraction form
    243,054.40/364,581.60 = 154,019.20/x
  3. Step 3: Cross multiply
    243,054.40x = 364,581.60 × 154,019.20
  4. Step 4: Simplify right side
    243,054.40x = 56,152,566,366.72
  5. Step 5: Solve for x
    x = 56,152,566,366.72/243,054.40
  6. Step 6: Final answer
    x = 231,028.80

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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.