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Finding the Fourth Proportional to 372,287.54, 558,431.40 and 260,186.72

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Solution

The fourth proportional to 372,287.54, 558,431.40 and 260,186.72 is: 390,280.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,287.54 : 558,431.40 = 260,186.72 : x
  2. Step 2: Convert to fraction form
    372,287.54/558,431.40 = 260,186.72/x
  3. Step 3: Cross multiply
    372,287.54x = 558,431.40 × 260,186.72
  4. Step 4: Simplify right side
    372,287.54x = 145,296,434,311.01
  5. Step 5: Solve for x
    x = 145,296,434,311.01/372,287.54
  6. Step 6: Final answer
    x = 390,280.14

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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.