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Finding the Fourth Proportional to 398,160.48, 549,581.52 and 270,909.87

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Solution

The fourth proportional to 398,160.48, 549,581.52 and 270,909.87 is: 373,937.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,160.48 : 549,581.52 = 270,909.87 : x
  2. Step 2: Convert to fraction form
    398,160.48/549,581.52 = 270,909.87/x
  3. Step 3: Cross multiply
    398,160.48x = 549,581.52 × 270,909.87
  4. Step 4: Simplify right side
    398,160.48x = 148,887,058,137.60
  5. Step 5: Solve for x
    x = 148,887,058,137.60/398,160.48
  6. Step 6: Final answer
    x = 373,937.31

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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.