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Finding the Fourth Proportional to 398,083.01, 549,399.94 and 236,938.58

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Solution

The fourth proportional to 398,083.01, 549,399.94 and 236,938.58 is: 327,002.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,083.01 : 549,399.94 = 236,938.58 : x
  2. Step 2: Convert to fraction form
    398,083.01/549,399.94 = 236,938.58/x
  3. Step 3: Cross multiply
    398,083.01x = 549,399.94 × 236,938.58
  4. Step 4: Simplify right side
    398,083.01x = 130,174,038,296.34
  5. Step 5: Solve for x
    x = 130,174,038,296.34/398,083.01
  6. Step 6: Final answer
    x = 327,002.24

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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.