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Finding the Fourth Proportional to 228,306.62, 315,041.69 and 154,569.06

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Solution

The fourth proportional to 228,306.62, 315,041.69 and 154,569.06 is: 213,290.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,306.62 : 315,041.69 = 154,569.06 : x
  2. Step 2: Convert to fraction form
    228,306.62/315,041.69 = 154,569.06/x
  3. Step 3: Cross multiply
    228,306.62x = 315,041.69 × 154,569.06
  4. Step 4: Simplify right side
    228,306.62x = 48,695,697,111.27
  5. Step 5: Solve for x
    x = 48,695,697,111.27/228,306.62
  6. Step 6: Final answer
    x = 213,290.78

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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.