Home / 178,920-278,316

Finding the Third Proportional to 178,920 and 278,316

Calculator

Solution

The third proportional to 178,920 and 278,316 is: 432,929.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,920 : 278,316 = 278,316 : x
  2. Step 2: Convert to fraction form
    178,920/278,316 = 278,316/x
  3. Step 3: Cross multiply
    178,920x = 278,316 × 278,316
  4. Step 4: Simplify right side
    178,920x = 77,459,795,856
  5. Step 5: Solve for x
    x = 77,459,795,856/178,920
  6. Step 6: Final answer
    x = 432,929.78

Related Problems

Find third proportional to 89,460 and 139,158
Half scale
Find third proportional to 357,840 and 556,632
Double scale
Find third proportional to 178,922 and 278,319
Similar ratio
Find third proportional to 268,380 and 417,474
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.