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Finding the Fourth Proportional to 372,662.60, 558,337.80 and 305,740.40

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Solution

The fourth proportional to 372,662.60, 558,337.80 and 305,740.40 is: 458,072.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,662.60 : 558,337.80 = 305,740.40 : x
  2. Step 2: Convert to fraction form
    372,662.60/558,337.80 = 305,740.40/x
  3. Step 3: Cross multiply
    372,662.60x = 558,337.80 × 305,740.40
  4. Step 4: Simplify right side
    372,662.60x = 170,706,422,307.12
  5. Step 5: Solve for x
    x = 170,706,422,307.12/372,662.60
  6. Step 6: Final answer
    x = 458,072.32

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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.