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Finding the Fourth Proportional to 228,580.70, 315,373.12 and 147,880.40

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Solution

The fourth proportional to 228,580.70, 315,373.12 and 147,880.40 is: 204,030.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,580.70 : 315,373.12 = 147,880.40 : x
  2. Step 2: Convert to fraction form
    228,580.70/315,373.12 = 147,880.40/x
  3. Step 3: Cross multiply
    228,580.70x = 315,373.12 × 147,880.40
  4. Step 4: Simplify right side
    228,580.70x = 46,637,503,134.85
  5. Step 5: Solve for x
    x = 46,637,503,134.85/228,580.70
  6. Step 6: Final answer
    x = 204,030.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.