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Finding the Fourth Proportional to 228,704.57, 315,623.35 and 138,058.89

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Solution

The fourth proportional to 228,704.57, 315,623.35 and 138,058.89 is: 190,527.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,704.57 : 315,623.35 = 138,058.89 : x
  2. Step 2: Convert to fraction form
    228,704.57/315,623.35 = 138,058.89/x
  3. Step 3: Cross multiply
    228,704.57x = 315,623.35 × 138,058.89
  4. Step 4: Simplify right side
    228,704.57x = 43,574,609,359.08
  5. Step 5: Solve for x
    x = 43,574,609,359.08/228,704.57
  6. Step 6: Final answer
    x = 190,527.93

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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.