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Finding the Fourth Proportional to 310,228.33, 465,369.30 and 85,588.77

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Solution

The fourth proportional to 310,228.33, 465,369.30 and 85,588.77 is: 128,390.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,228.33 : 465,369.30 = 85,588.77 : x
  2. Step 2: Convert to fraction form
    310,228.33/465,369.30 = 85,588.77/x
  3. Step 3: Cross multiply
    310,228.33x = 465,369.30 × 85,588.77
  4. Step 4: Simplify right side
    310,228.33x = 39,830,383,655.91
  5. Step 5: Solve for x
    x = 39,830,383,655.91/310,228.33
  6. Step 6: Final answer
    x = 128,390.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.