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Finding the Fourth Proportional to 398,501.37, 549,945.95 and 226,416.87

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Solution

The fourth proportional to 398,501.37, 549,945.95 and 226,416.87 is: 312,463.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,501.37 : 549,945.95 = 226,416.87 : x
  2. Step 2: Convert to fraction form
    398,501.37/549,945.95 = 226,416.87/x
  3. Step 3: Cross multiply
    398,501.37x = 549,945.95 × 226,416.87
  4. Step 4: Simplify right side
    398,501.37x = 124,517,039,536.09
  5. Step 5: Solve for x
    x = 124,517,039,536.09/398,501.37
  6. Step 6: Final answer
    x = 312,463.27

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1.5x scale

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.