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Finding the Fourth Proportional to 280,093.52, 420,327.12 and 145,281.84

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Solution

The fourth proportional to 280,093.52, 420,327.12 and 145,281.84 is: 218,019.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,093.52 : 420,327.12 = 145,281.84 : x
  2. Step 2: Convert to fraction form
    280,093.52/420,327.12 = 145,281.84/x
  3. Step 3: Cross multiply
    280,093.52x = 420,327.12 × 145,281.84
  4. Step 4: Simplify right side
    280,093.52x = 61,065,897,395.50
  5. Step 5: Solve for x
    x = 61,065,897,395.50/280,093.52
  6. Step 6: Final answer
    x = 218,019.67

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1.5x scale

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.