Home / 387,691,984.32-535,018,355.28-211,480,762.56

Finding the Fourth Proportional to 387,691,984.32, 535,018,355.28 and 211,480,762.56

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Solution

The fourth proportional to 387,691,984.32, 535,018,355.28 and 211,480,762.56 is: 291,845,316.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,691,984.32 : 535,018,355.28 = 211,480,762.56 : x
  2. Step 2: Convert to fraction form
    387,691,984.32/535,018,355.28 = 211,480,762.56/x
  3. Step 3: Cross multiply
    387,691,984.32x = 535,018,355.28 × 211,480,762.56
  4. Step 4: Simplify right side
    387,691,984.32x = 113,146,089,758,211,392
  5. Step 5: Solve for x
    x = 113,146,089,758,211,392/387,691,984.32
  6. Step 6: Final answer
    x = 291,845,316.22

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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.