Home / 303,402-455,103-81,786

Finding the Fourth Proportional to 303,402, 455,103 and 81,786

Calculator

Solution

The fourth proportional to 303,402, 455,103 and 81,786 is: 122,679

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,402 : 455,103 = 81,786 : x
  2. Step 2: Convert to fraction form
    303,402/455,103 = 81,786/x
  3. Step 3: Cross multiply
    303,402x = 455,103 × 81,786
  4. Step 4: Simplify right side
    303,402x = 37,221,053,958
  5. Step 5: Solve for x
    x = 37,221,053,958/303,402
  6. Step 6: Final answer
    x = 122,679

Related Problems

Find fourth proportional to 151,701, 227,551.50 and 40,893
Half scale
Find fourth proportional to 606,804, 910,206 and 163,572
Double scale
Find fourth proportional to 303,403, 455,104.50 and 81,787
Similar ratio
Find fourth proportional to 455,103, 682,654.50 and 122,679
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.