Home / 286,020-420,268.50

Finding the Third Proportional to 286,020 and 420,268.50

Calculator

Solution

The third proportional to 286,020 and 420,268.50 is: 617,528.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,020 : 420,268.50 = 420,268.50 : x
  2. Step 2: Convert to fraction form
    286,020/420,268.50 = 420,268.50/x
  3. Step 3: Cross multiply
    286,020x = 420,268.50 × 420,268.50
  4. Step 4: Simplify right side
    286,020x = 176,625,612,092.25
  5. Step 5: Solve for x
    x = 176,625,612,092.25/286,020
  6. Step 6: Final answer
    x = 617,528.89

Related Problems

Find third proportional to 143,010 and 210,134.25
Half scale
Find third proportional to 572,040 and 840,537
Double scale
Find third proportional to 286,022 and 420,271
Similar ratio
Find third proportional to 429,030 and 630,402.75
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.