Home / 253,994,490.90-380,991,736.35-81,488,742.30

Finding the Fourth Proportional to 253,994,490.90, 380,991,736.35 and 81,488,742.30

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Solution

The fourth proportional to 253,994,490.90, 380,991,736.35 and 81,488,742.30 is: 122,233,113.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,994,490.90 : 380,991,736.35 = 81,488,742.30 : x
  2. Step 2: Convert to fraction form
    253,994,490.90/380,991,736.35 = 81,488,742.30/x
  3. Step 3: Cross multiply
    253,994,490.90x = 380,991,736.35 × 81,488,742.30
  4. Step 4: Simplify right side
    253,994,490.90x = 31,046,537,421,854,692
  5. Step 5: Solve for x
    x = 31,046,537,421,854,692/253,994,490.90
  6. Step 6: Final answer
    x = 122,233,113.45

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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.