Home / 388,692,658.20-536,399,437.44-221,426,440.44

Finding the Fourth Proportional to 388,692,658.20, 536,399,437.44 and 221,426,440.44

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Solution

The fourth proportional to 388,692,658.20, 536,399,437.44 and 221,426,440.44 is: 305,570,521.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,692,658.20 : 536,399,437.44 = 221,426,440.44 : x
  2. Step 2: Convert to fraction form
    388,692,658.20/536,399,437.44 = 221,426,440.44/x
  3. Step 3: Cross multiply
    388,692,658.20x = 536,399,437.44 × 221,426,440.44
  4. Step 4: Simplify right side
    388,692,658.20x = 118,773,018,086,357,664
  5. Step 5: Solve for x
    x = 118,773,018,086,357,664/388,692,658.20
  6. Step 6: Final answer
    x = 305,570,521.03

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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.