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Finding the Fourth Proportional to 228,230.04, 315,215.90 and 155,506.82

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Solution

The fourth proportional to 228,230.04, 315,215.90 and 155,506.82 is: 214,775.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,230.04 : 315,215.90 = 155,506.82 : x
  2. Step 2: Convert to fraction form
    228,230.04/315,215.90 = 155,506.82/x
  3. Step 3: Cross multiply
    228,230.04x = 315,215.90 × 155,506.82
  4. Step 4: Simplify right side
    228,230.04x = 49,018,219,868.82
  5. Step 5: Solve for x
    x = 49,018,219,868.82/228,230.04
  6. Step 6: Final answer
    x = 214,775.50

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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.