Home / 393,094,682-542,469,134.76-216,893,643.92

Finding the Fourth Proportional to 393,094,682, 542,469,134.76 and 216,893,643.92

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Solution

The fourth proportional to 393,094,682, 542,469,134.76 and 216,893,643.92 is: 299,312,386.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,094,682 : 542,469,134.76 = 216,893,643.92 : x
  2. Step 2: Convert to fraction form
    393,094,682/542,469,134.76 = 216,893,643.92/x
  3. Step 3: Cross multiply
    393,094,682x = 542,469,134.76 × 216,893,643.92
  4. Step 4: Simplify right side
    393,094,682x = 117,658,107,352,225,920
  5. Step 5: Solve for x
    x = 117,658,107,352,225,920/393,094,682
  6. Step 6: Final answer
    x = 299,312,386.40

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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.