Home / 388,976,393.32-536,781,106.80-212,762,847.32

Finding the Fourth Proportional to 388,976,393.32, 536,781,106.80 and 212,762,847.32

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Solution

The fourth proportional to 388,976,393.32, 536,781,106.80 and 212,762,847.32 is: 293,609,274.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,976,393.32 : 536,781,106.80 = 212,762,847.32 : x
  2. Step 2: Convert to fraction form
    388,976,393.32/536,781,106.80 = 212,762,847.32/x
  3. Step 3: Cross multiply
    388,976,393.32x = 536,781,106.80 × 212,762,847.32
  4. Step 4: Simplify right side
    388,976,393.32x = 114,207,076,670,349,008
  5. Step 5: Solve for x
    x = 114,207,076,670,349,008/388,976,393.32
  6. Step 6: Final answer
    x = 293,609,274.58

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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.