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Finding the Fourth Proportional to 286,617.96, 429,927.93 and 86,940.06

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Solution

The fourth proportional to 286,617.96, 429,927.93 and 86,940.06 is: 130,410.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,617.96 : 429,927.93 = 86,940.06 : x
  2. Step 2: Convert to fraction form
    286,617.96/429,927.93 = 86,940.06/x
  3. Step 3: Cross multiply
    286,617.96x = 429,927.93 × 86,940.06
  4. Step 4: Simplify right side
    286,617.96x = 37,377,960,029.88
  5. Step 5: Solve for x
    x = 37,377,960,029.88/286,617.96
  6. Step 6: Final answer
    x = 130,410.39

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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.