Home / 392,029,019.81-540,983,474.24-213,409,194.75

Finding the Fourth Proportional to 392,029,019.81, 540,983,474.24 and 213,409,194.75

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Solution

The fourth proportional to 392,029,019.81, 540,983,474.24 and 213,409,194.75 is: 294,495,666.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,029,019.81 : 540,983,474.24 = 213,409,194.75 : x
  2. Step 2: Convert to fraction form
    392,029,019.81/540,983,474.24 = 213,409,194.75/x
  3. Step 3: Cross multiply
    392,029,019.81x = 540,983,474.24 × 213,409,194.75
  4. Step 4: Simplify right side
    392,029,019.81x = 115,450,847,610,748,080
  5. Step 5: Solve for x
    x = 115,450,847,610,748,080/392,029,019.81
  6. Step 6: Final answer
    x = 294,495,666.84

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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.