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Finding the Fourth Proportional to 398,501.56, 549,924.96 and 228,722.32

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Solution

The fourth proportional to 398,501.56, 549,924.96 and 228,722.32 is: 315,632.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,501.56 : 549,924.96 = 228,722.32 : x
  2. Step 2: Convert to fraction form
    398,501.56/549,924.96 = 228,722.32/x
  3. Step 3: Cross multiply
    398,501.56x = 549,924.96 × 228,722.32
  4. Step 4: Simplify right side
    398,501.56x = 125,780,112,677.11
  5. Step 5: Solve for x
    x = 125,780,112,677.11/398,501.56
  6. Step 6: Final answer
    x = 315,632.67

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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.