Home / 261,370-392,055-113,626

Finding the Fourth Proportional to 261,370, 392,055 and 113,626

Calculator

Solution

The fourth proportional to 261,370, 392,055 and 113,626 is: 170,439

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,370 : 392,055 = 113,626 : x
  2. Step 2: Convert to fraction form
    261,370/392,055 = 113,626/x
  3. Step 3: Cross multiply
    261,370x = 392,055 × 113,626
  4. Step 4: Simplify right side
    261,370x = 44,547,641,430
  5. Step 5: Solve for x
    x = 44,547,641,430/261,370
  6. Step 6: Final answer
    x = 170,439

Related Problems

Find fourth proportional to 130,685, 196,027.50 and 56,813
Half scale
Find fourth proportional to 522,740, 784,110 and 227,252
Double scale
Find fourth proportional to 261,371, 392,056.50 and 113,627
Similar ratio
Find fourth proportional to 392,055, 588,082.50 and 170,439
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.