Home / 280,037,354.40-420,056,031.60-75,565,101.60

Finding the Fourth Proportional to 280,037,354.40, 420,056,031.60 and 75,565,101.60

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Solution

The fourth proportional to 280,037,354.40, 420,056,031.60 and 75,565,101.60 is: 113,347,652.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,037,354.40 : 420,056,031.60 = 75,565,101.60 : x
  2. Step 2: Convert to fraction form
    280,037,354.40/420,056,031.60 = 75,565,101.60/x
  3. Step 3: Cross multiply
    280,037,354.40x = 420,056,031.60 × 75,565,101.60
  4. Step 4: Simplify right side
    280,037,354.40x = 31,741,576,705,546,808
  5. Step 5: Solve for x
    x = 31,741,576,705,546,808/280,037,354.40
  6. Step 6: Final answer
    x = 113,347,652.40

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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.