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Finding the Fourth Proportional to 309,997.50, 465,000.57 and 88,381.50

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Solution

The fourth proportional to 309,997.50, 465,000.57 and 88,381.50 is: 132,573.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,997.50 : 465,000.57 = 88,381.50 : x
  2. Step 2: Convert to fraction form
    309,997.50/465,000.57 = 88,381.50/x
  3. Step 3: Cross multiply
    309,997.50x = 465,000.57 × 88,381.50
  4. Step 4: Simplify right side
    309,997.50x = 41,097,447,877.46
  5. Step 5: Solve for x
    x = 41,097,447,877.46/309,997.50
  6. Step 6: Final answer
    x = 132,573.48

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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.