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Finding the Fourth Proportional to 228,605.76, 342,783.36 and 70,790.40

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Solution

The fourth proportional to 228,605.76, 342,783.36 and 70,790.40 is: 106,146.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,605.76 : 342,783.36 = 70,790.40 : x
  2. Step 2: Convert to fraction form
    228,605.76/342,783.36 = 70,790.40/x
  3. Step 3: Cross multiply
    228,605.76x = 342,783.36 × 70,790.40
  4. Step 4: Simplify right side
    228,605.76x = 24,265,771,167.74
  5. Step 5: Solve for x
    x = 24,265,771,167.74/228,605.76
  6. Step 6: Final answer
    x = 106,146.81

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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.