Home / 380,503,665.70-525,062,987.85-210,962,427.46

Finding the Fourth Proportional to 380,503,665.70, 525,062,987.85 and 210,962,427.46

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Solution

The fourth proportional to 380,503,665.70, 525,062,987.85 and 210,962,427.46 is: 291,110,368.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,503,665.70 : 525,062,987.85 = 210,962,427.46 : x
  2. Step 2: Convert to fraction form
    380,503,665.70/525,062,987.85 = 210,962,427.46/x
  3. Step 3: Cross multiply
    380,503,665.70x = 525,062,987.85 × 210,962,427.46
  4. Step 4: Simplify right side
    380,503,665.70x = 110,768,562,486,236,496
  5. Step 5: Solve for x
    x = 110,768,562,486,236,496/380,503,665.70
  6. Step 6: Final answer
    x = 291,110,368.89

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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.