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Finding the Fourth Proportional to 202,307.90, 303,571.20 and 90,005.45

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Solution

The fourth proportional to 202,307.90, 303,571.20 and 90,005.45 is: 135,056.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,307.90 : 303,571.20 = 90,005.45 : x
  2. Step 2: Convert to fraction form
    202,307.90/303,571.20 = 90,005.45/x
  3. Step 3: Cross multiply
    202,307.90x = 303,571.20 × 90,005.45
  4. Step 4: Simplify right side
    202,307.90x = 27,323,062,463.04
  5. Step 5: Solve for x
    x = 27,323,062,463.04/202,307.90
  6. Step 6: Final answer
    x = 135,056.82

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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.