Home / 393,094,681-542,469,133.38-216,893,642.92

Finding the Fourth Proportional to 393,094,681, 542,469,133.38 and 216,893,642.92

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Solution

The fourth proportional to 393,094,681, 542,469,133.38 and 216,893,642.92 is: 299,312,385.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,094,681 : 542,469,133.38 = 216,893,642.92 : x
  2. Step 2: Convert to fraction form
    393,094,681/542,469,133.38 = 216,893,642.92/x
  3. Step 3: Cross multiply
    393,094,681x = 542,469,133.38 × 216,893,642.92
  4. Step 4: Simplify right side
    393,094,681x = 117,658,106,510,443,568
  5. Step 5: Solve for x
    x = 117,658,106,510,443,568/393,094,681
  6. Step 6: Final answer
    x = 299,312,385.02

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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.