Home / 221,708,820.56-305,814,008.67-142,197,941.84

Finding the Fourth Proportional to 221,708,820.56, 305,814,008.67 and 142,197,941.84

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Solution

The fourth proportional to 221,708,820.56, 305,814,008.67 and 142,197,941.84 is: 196,140,697.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,708,820.56 : 305,814,008.67 = 142,197,941.84 : x
  2. Step 2: Convert to fraction form
    221,708,820.56/305,814,008.67 = 142,197,941.84/x
  3. Step 3: Cross multiply
    221,708,820.56x = 305,814,008.67 × 142,197,941.84
  4. Step 4: Simplify right side
    221,708,820.56x = 43,486,122,617,487,104
  5. Step 5: Solve for x
    x = 43,486,122,617,487,104/221,708,820.56
  6. Step 6: Final answer
    x = 196,140,697.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.