Home / 387,870,862.37-535,273,094.78-211,670,207.78

Finding the Fourth Proportional to 387,870,862.37, 535,273,094.78 and 211,670,207.78

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Solution

The fourth proportional to 387,870,862.37, 535,273,094.78 and 211,670,207.78 is: 292,111,055.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,870,862.37 : 535,273,094.78 = 211,670,207.78 : x
  2. Step 2: Convert to fraction form
    387,870,862.37/535,273,094.78 = 211,670,207.78/x
  3. Step 3: Cross multiply
    387,870,862.37x = 535,273,094.78 × 211,670,207.78
  4. Step 4: Simplify right side
    387,870,862.37x = 113,301,367,188,185,280
  5. Step 5: Solve for x
    x = 113,301,367,188,185,280/387,870,862.37
  6. Step 6: Final answer
    x = 292,111,055.98

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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.