Home / 392,642,631.72-541,871,074.62-216,430,230.24

Finding the Fourth Proportional to 392,642,631.72, 541,871,074.62 and 216,430,230.24

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Solution

The fourth proportional to 392,642,631.72, 541,871,074.62 and 216,430,230.24 is: 298,687,080.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,642,631.72 : 541,871,074.62 = 216,430,230.24 : x
  2. Step 2: Convert to fraction form
    392,642,631.72/541,871,074.62 = 216,430,230.24/x
  3. Step 3: Cross multiply
    392,642,631.72x = 541,871,074.62 × 216,430,230.24
  4. Step 4: Simplify right side
    392,642,631.72x = 117,277,281,440,402,832
  5. Step 5: Solve for x
    x = 117,277,281,440,402,832/392,642,631.72
  6. Step 6: Final answer
    x = 298,687,080.73

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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.