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Finding the Fourth Proportional to 356,753.25, 535,129.47 and 90,513.18

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Solution

The fourth proportional to 356,753.25, 535,129.47 and 90,513.18 is: 135,769.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,753.25 : 535,129.47 = 90,513.18 : x
  2. Step 2: Convert to fraction form
    356,753.25/535,129.47 = 90,513.18/x
  3. Step 3: Cross multiply
    356,753.25x = 535,129.47 × 90,513.18
  4. Step 4: Simplify right side
    356,753.25x = 48,436,270,041.41
  5. Step 5: Solve for x
    x = 48,436,270,041.41/356,753.25
  6. Step 6: Final answer
    x = 135,769.67

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