Home / 405,133.95-558,610.53-276,148.78

Finding the Fourth Proportional to 405,133.95, 558,610.53 and 276,148.78

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Solution

The fourth proportional to 405,133.95, 558,610.53 and 276,148.78 is: 380,762.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,133.95 : 558,610.53 = 276,148.78 : x
  2. Step 2: Convert to fraction form
    405,133.95/558,610.53 = 276,148.78/x
  3. Step 3: Cross multiply
    405,133.95x = 558,610.53 × 276,148.78
  4. Step 4: Simplify right side
    405,133.95x = 154,259,613,922.57
  5. Step 5: Solve for x
    x = 154,259,613,922.57/405,133.95
  6. Step 6: Final answer
    x = 380,762.00

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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.