Home / 387,871,543.70-535,274,034.08-211,670,888.38

Finding the Fourth Proportional to 387,871,543.70, 535,274,034.08 and 211,670,888.38

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Solution

The fourth proportional to 387,871,543.70, 535,274,034.08 and 211,670,888.38 is: 292,111,994.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,871,543.70 : 535,274,034.08 = 211,670,888.38 : x
  2. Step 2: Convert to fraction form
    387,871,543.70/535,274,034.08 = 211,670,888.38/x
  3. Step 3: Cross multiply
    387,871,543.70x = 535,274,034.08 × 211,670,888.38
  4. Step 4: Simplify right side
    387,871,543.70x = 113,301,930,320,459,984
  5. Step 5: Solve for x
    x = 113,301,930,320,459,984/387,871,543.70
  6. Step 6: Final answer
    x = 292,111,994.71

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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.