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Finding the Fourth Proportional to 243,038.40, 364,557.60 and 154,003.20

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Solution

The fourth proportional to 243,038.40, 364,557.60 and 154,003.20 is: 231,004.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,038.40 : 364,557.60 = 154,003.20 : x
  2. Step 2: Convert to fraction form
    243,038.40/364,557.60 = 154,003.20/x
  3. Step 3: Cross multiply
    243,038.40x = 364,557.60 × 154,003.20
  4. Step 4: Simplify right side
    243,038.40x = 56,143,036,984.32
  5. Step 5: Solve for x
    x = 56,143,036,984.32/243,038.40
  6. Step 6: Final answer
    x = 231,004.80

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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.