Home / 388,102,078.40-535,578,095.34-211,890,068.30

Finding the Fourth Proportional to 388,102,078.40, 535,578,095.34 and 211,890,068.30

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Solution

The fourth proportional to 388,102,078.40, 535,578,095.34 and 211,890,068.30 is: 292,406,780.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,102,078.40 : 535,578,095.34 = 211,890,068.30 : x
  2. Step 2: Convert to fraction form
    388,102,078.40/535,578,095.34 = 211,890,068.30/x
  3. Step 3: Cross multiply
    388,102,078.40x = 535,578,095.34 × 211,890,068.30
  4. Step 4: Simplify right side
    388,102,078.40x = 113,483,679,201,576,512
  5. Step 5: Solve for x
    x = 113,483,679,201,576,512/388,102,078.40
  6. Step 6: Final answer
    x = 292,406,780.37

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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.