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Finding the Fourth Proportional to 445,990.67, 615,467.55 and 242,041.64

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Solution

The fourth proportional to 445,990.67, 615,467.55 and 242,041.64 is: 334,017.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,990.67 : 615,467.55 = 242,041.64 : x
  2. Step 2: Convert to fraction form
    445,990.67/615,467.55 = 242,041.64/x
  3. Step 3: Cross multiply
    445,990.67x = 615,467.55 × 242,041.64
  4. Step 4: Simplify right side
    445,990.67x = 148,968,772,999.10
  5. Step 5: Solve for x
    x = 148,968,772,999.10/445,990.67
  6. Step 6: Final answer
    x = 334,017.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.