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Finding the Fourth Proportional to 228,616.16, 315,644.33 and 142,705.94

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Solution

The fourth proportional to 228,616.16, 315,644.33 and 142,705.94 is: 197,030.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,616.16 : 315,644.33 = 142,705.94 : x
  2. Step 2: Convert to fraction form
    228,616.16/315,644.33 = 142,705.94/x
  3. Step 3: Cross multiply
    228,616.16x = 315,644.33 × 142,705.94
  4. Step 4: Simplify right side
    228,616.16x = 45,044,318,526.57
  5. Step 5: Solve for x
    x = 45,044,318,526.57/228,616.16
  6. Step 6: Final answer
    x = 197,030.34

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1.5x scale

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.