Home / 312,487-431,224-176,535

Finding the Fourth Proportional to 312,487, 431,224 and 176,535

Calculator

Solution

The fourth proportional to 312,487, 431,224 and 176,535 is: 243,613.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,487 : 431,224 = 176,535 : x
  2. Step 2: Convert to fraction form
    312,487/431,224 = 176,535/x
  3. Step 3: Cross multiply
    312,487x = 431,224 × 176,535
  4. Step 4: Simplify right side
    312,487x = 76,126,128,840
  5. Step 5: Solve for x
    x = 76,126,128,840/312,487
  6. Step 6: Final answer
    x = 243,613.75

Related Problems

Find fourth proportional to 156,243.50, 215,612 and 88,267.50
Half scale
Find fourth proportional to 624,974, 862,448 and 353,070
Double scale
Find fourth proportional to 312,488, 431,225.38 and 176,536
Similar ratio
Find fourth proportional to 468,730.50, 646,836 and 264,802.50
1.5x scale

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.