Home / 58,428-128,520

Finding the Third Proportional to 58,428 and 128,520

Calculator

Solution

The third proportional to 58,428 and 128,520 is: 282,696.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,428 : 128,520 = 128,520 : x
  2. Step 2: Convert to fraction form
    58,428/128,520 = 128,520/x
  3. Step 3: Cross multiply
    58,428x = 128,520 × 128,520
  4. Step 4: Simplify right side
    58,428x = 16,517,390,400
  5. Step 5: Solve for x
    x = 16,517,390,400/58,428
  6. Step 6: Final answer
    x = 282,696.49

Related Problems

Find third proportional to 29,214 and 64,260
Half scale
Find third proportional to 116,856 and 257,040
Double scale
Find third proportional to 58,430 and 128,524
Similar ratio
Find third proportional to 87,642 and 192,780
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.