Home / 398,277.28-549,626.77-216,989.16

Finding the Fourth Proportional to 398,277.28, 549,626.77 and 216,989.16

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Solution

The fourth proportional to 398,277.28, 549,626.77 and 216,989.16 is: 299,447.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,277.28 : 549,626.77 = 216,989.16 : x
  2. Step 2: Convert to fraction form
    398,277.28/549,626.77 = 216,989.16/x
  3. Step 3: Cross multiply
    398,277.28x = 549,626.77 × 216,989.16
  4. Step 4: Simplify right side
    398,277.28x = 119,263,051,135.81
  5. Step 5: Solve for x
    x = 119,263,051,135.81/398,277.28
  6. Step 6: Final answer
    x = 299,447.29

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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.