Home / 286,609.32-429,915-86,931.42

Finding the Fourth Proportional to 286,609.32, 429,915 and 86,931.42

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Solution

The fourth proportional to 286,609.32, 429,915 and 86,931.42 is: 130,397.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,609.32 : 429,915 = 86,931.42 : x
  2. Step 2: Convert to fraction form
    286,609.32/429,915 = 86,931.42/x
  3. Step 3: Cross multiply
    286,609.32x = 429,915 × 86,931.42
  4. Step 4: Simplify right side
    286,609.32x = 37,373,121,429.30
  5. Step 5: Solve for x
    x = 37,373,121,429.30/286,609.32
  6. Step 6: Final answer
    x = 130,397.44

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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.