Home / 280,114,720.40-420,644,472.60-234,009,261.20

Finding the Fourth Proportional to 280,114,720.40, 420,644,472.60 and 234,009,261.20

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Solution

The fourth proportional to 280,114,720.40, 420,644,472.60 and 234,009,261.20 is: 351,408,530.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,114,720.40 : 420,644,472.60 = 234,009,261.20 : x
  2. Step 2: Convert to fraction form
    280,114,720.40/420,644,472.60 = 234,009,261.20/x
  3. Step 3: Cross multiply
    280,114,720.40x = 420,644,472.60 × 234,009,261.20
  4. Step 4: Simplify right side
    280,114,720.40x = 98,434,702,260,989,648
  5. Step 5: Solve for x
    x = 98,434,702,260,989,648/280,114,720.40
  6. Step 6: Final answer
    x = 351,408,530.48

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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.