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Finding the Fourth Proportional to 445,687.55, 668,465.71 and 146,199.77

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Solution

The fourth proportional to 445,687.55, 668,465.71 and 146,199.77 is: 219,278.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,687.55 : 668,465.71 = 146,199.77 : x
  2. Step 2: Convert to fraction form
    445,687.55/668,465.71 = 146,199.77/x
  3. Step 3: Cross multiply
    445,687.55x = 668,465.71 × 146,199.77
  4. Step 4: Simplify right side
    445,687.55x = 97,729,533,054.89
  5. Step 5: Solve for x
    x = 97,729,533,054.89/445,687.55
  6. Step 6: Final answer
    x = 219,278.13

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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.