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Finding the Fourth Proportional to 372,990.60, 558,829.80 and 306,068.40

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Solution

The fourth proportional to 372,990.60, 558,829.80 and 306,068.40 is: 458,564.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,990.60 : 558,829.80 = 306,068.40 : x
  2. Step 2: Convert to fraction form
    372,990.60/558,829.80 = 306,068.40/x
  3. Step 3: Cross multiply
    372,990.60x = 558,829.80 × 306,068.40
  4. Step 4: Simplify right side
    372,990.60x = 171,040,142,758.32
  5. Step 5: Solve for x
    x = 171,040,142,758.32/372,990.60
  6. Step 6: Final answer
    x = 458,564.22

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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.