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Finding the Fourth Proportional to 372,287.90, 558,431.94 and 260,187.06

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Solution

The fourth proportional to 372,287.90, 558,431.94 and 260,187.06 is: 390,280.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,287.90 : 558,431.94 = 260,187.06 : x
  2. Step 2: Convert to fraction form
    372,287.90/558,431.94 = 260,187.06/x
  3. Step 3: Cross multiply
    372,287.90x = 558,431.94 × 260,187.06
  4. Step 4: Simplify right side
    372,287.90x = 145,296,764,678.70
  5. Step 5: Solve for x
    x = 145,296,764,678.70/372,287.90
  6. Step 6: Final answer
    x = 390,280.65

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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.