Home / 388,138,822.40-535,639,030.40-211,933,804.16

Finding the Fourth Proportional to 388,138,822.40, 535,639,030.40 and 211,933,804.16

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Solution

The fourth proportional to 388,138,822.40, 535,639,030.40 and 211,933,804.16 is: 292,472,720.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,138,822.40 : 535,639,030.40 = 211,933,804.16 : x
  2. Step 2: Convert to fraction form
    388,138,822.40/535,639,030.40 = 211,933,804.16/x
  3. Step 3: Cross multiply
    388,138,822.40x = 535,639,030.40 × 211,933,804.16
  4. Step 4: Simplify right side
    388,138,822.40x = 113,520,017,369,245,872
  5. Step 5: Solve for x
    x = 113,520,017,369,245,872/388,138,822.40
  6. Step 6: Final answer
    x = 292,472,720.63

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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.