Home / 280,197.12-419,742.72-210,155.52

Finding the Fourth Proportional to 280,197.12, 419,742.72 and 210,155.52

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Solution

The fourth proportional to 280,197.12, 419,742.72 and 210,155.52 is: 314,818.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,197.12 : 419,742.72 = 210,155.52 : x
  2. Step 2: Convert to fraction form
    280,197.12/419,742.72 = 210,155.52/x
  3. Step 3: Cross multiply
    280,197.12x = 419,742.72 × 210,155.52
  4. Step 4: Simplify right side
    280,197.12x = 88,211,249,587.81
  5. Step 5: Solve for x
    x = 88,211,249,587.81/280,197.12
  6. Step 6: Final answer
    x = 314,818.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.