Home / 357,054-553,215

Finding the Third Proportional to 357,054 and 553,215

Calculator

Solution

The third proportional to 357,054 and 553,215 is: 857,144.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,054 : 553,215 = 553,215 : x
  2. Step 2: Convert to fraction form
    357,054/553,215 = 553,215/x
  3. Step 3: Cross multiply
    357,054x = 553,215 × 553,215
  4. Step 4: Simplify right side
    357,054x = 306,046,836,225
  5. Step 5: Solve for x
    x = 306,046,836,225/357,054
  6. Step 6: Final answer
    x = 857,144.40

Related Problems

Find third proportional to 178,527 and 276,607.50
Half scale
Find third proportional to 714,108 and 1,106,430
Double scale
Find third proportional to 357,056 and 553,218
Similar ratio
Find third proportional to 535,581 and 829,822.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.