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Finding the Fourth Proportional to 445,505.76, 668,225.06 and 141,887.67

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Solution

The fourth proportional to 445,505.76, 668,225.06 and 141,887.67 is: 212,820.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,505.76 : 668,225.06 = 141,887.67 : x
  2. Step 2: Convert to fraction form
    445,505.76/668,225.06 = 141,887.67/x
  3. Step 3: Cross multiply
    445,505.76x = 668,225.06 × 141,887.67
  4. Step 4: Simplify right side
    445,505.76x = 94,812,897,153.73
  5. Step 5: Solve for x
    x = 94,812,897,153.73/445,505.76
  6. Step 6: Final answer
    x = 212,820.81

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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.