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Finding the Fourth Proportional to 286,670.80, 429,896.85 and 86,924.80

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Solution

The fourth proportional to 286,670.80, 429,896.85 and 86,924.80 is: 130,354.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,670.80 : 429,896.85 = 86,924.80 : x
  2. Step 2: Convert to fraction form
    286,670.80/429,896.85 = 86,924.80/x
  3. Step 3: Cross multiply
    286,670.80x = 429,896.85 × 86,924.80
  4. Step 4: Simplify right side
    286,670.80x = 37,368,697,706.88
  5. Step 5: Solve for x
    x = 37,368,697,706.88/286,670.80
  6. Step 6: Final answer
    x = 130,354.04

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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.