Home / 286,465.32-429,742.55-86,738.15

Finding the Fourth Proportional to 286,465.32, 429,742.55 and 86,738.15

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Solution

The fourth proportional to 286,465.32, 429,742.55 and 86,738.15 is: 130,120.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,465.32 : 429,742.55 = 86,738.15 : x
  2. Step 2: Convert to fraction form
    286,465.32/429,742.55 = 86,738.15/x
  3. Step 3: Cross multiply
    286,465.32x = 429,742.55 × 86,738.15
  4. Step 4: Simplify right side
    286,465.32x = 37,275,073,763.28
  5. Step 5: Solve for x
    x = 37,275,073,763.28/286,465.32
  6. Step 6: Final answer
    x = 130,120.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.