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Finding the Fourth Proportional to 286,554.85, 429,832.28 and 185,515.45

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Solution

The fourth proportional to 286,554.85, 429,832.28 and 185,515.45 is: 278,273.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,554.85 : 429,832.28 = 185,515.45 : x
  2. Step 2: Convert to fraction form
    286,554.85/429,832.28 = 185,515.45/x
  3. Step 3: Cross multiply
    286,554.85x = 429,832.28 × 185,515.45
  4. Step 4: Simplify right side
    286,554.85x = 79,740,527,921.15
  5. Step 5: Solve for x
    x = 79,740,527,921.15/286,554.85
  6. Step 6: Final answer
    x = 278,273.18

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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.