Home / 387,871,528.74-535,274,013.58-211,670,873.46

Finding the Fourth Proportional to 387,871,528.74, 535,274,013.58 and 211,670,873.46

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Solution

The fourth proportional to 387,871,528.74, 535,274,013.58 and 211,670,873.46 is: 292,111,974.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,871,528.74 : 535,274,013.58 = 211,670,873.46 : x
  2. Step 2: Convert to fraction form
    387,871,528.74/535,274,013.58 = 211,670,873.46/x
  3. Step 3: Cross multiply
    387,871,528.74x = 535,274,013.58 × 211,670,873.46
  4. Step 4: Simplify right side
    387,871,528.74x = 113,301,917,994,984,128
  5. Step 5: Solve for x
    x = 113,301,917,994,984,128/387,871,528.74
  6. Step 6: Final answer
    x = 292,111,974.20

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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.