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Finding the Fourth Proportional to 228,018, 342,072.36 and 70,239.72

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Solution

The fourth proportional to 228,018, 342,072.36 and 70,239.72 is: 105,373.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,018 : 342,072.36 = 70,239.72 : x
  2. Step 2: Convert to fraction form
    228,018/342,072.36 = 70,239.72/x
  3. Step 3: Cross multiply
    228,018x = 342,072.36 × 70,239.72
  4. Step 4: Simplify right side
    228,018x = 24,027,066,786.14
  5. Step 5: Solve for x
    x = 24,027,066,786.14/228,018
  6. Step 6: Final answer
    x = 105,373.55

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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.