Home / 388,658,090.16-536,348,122.80-212,446,787.04

Finding the Fourth Proportional to 388,658,090.16, 536,348,122.80 and 212,446,787.04

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Solution

The fourth proportional to 388,658,090.16, 536,348,122.80 and 212,446,787.04 is: 293,176,543.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,658,090.16 : 536,348,122.80 = 212,446,787.04 : x
  2. Step 2: Convert to fraction form
    388,658,090.16/536,348,122.80 = 212,446,787.04/x
  3. Step 3: Cross multiply
    388,658,090.16x = 536,348,122.80 × 212,446,787.04
  4. Step 4: Simplify right side
    388,658,090.16x = 113,945,435,423,795,360
  5. Step 5: Solve for x
    x = 113,945,435,423,795,360/388,658,090.16
  6. Step 6: Final answer
    x = 293,176,543.36

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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.