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Finding the Fourth Proportional to 398,379.94, 549,522.57 and 237,127.30

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Solution

The fourth proportional to 398,379.94, 549,522.57 and 237,127.30 is: 327,091.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,379.94 : 549,522.57 = 237,127.30 : x
  2. Step 2: Convert to fraction form
    398,379.94/549,522.57 = 237,127.30/x
  3. Step 3: Cross multiply
    398,379.94x = 549,522.57 × 237,127.30
  4. Step 4: Simplify right side
    398,379.94x = 130,306,803,313.16
  5. Step 5: Solve for x
    x = 130,306,803,313.16/398,379.94
  6. Step 6: Final answer
    x = 327,091.78

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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.