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Finding the Fourth Proportional to 286,611.93, 429,918.93 and 86,934.06

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Solution

The fourth proportional to 286,611.93, 429,918.93 and 86,934.06 is: 130,401.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,611.93 : 429,918.93 = 86,934.06 : x
  2. Step 2: Convert to fraction form
    286,611.93/429,918.93 = 86,934.06/x
  3. Step 3: Cross multiply
    286,611.93x = 429,918.93 × 86,934.06
  4. Step 4: Simplify right side
    286,611.93x = 37,374,598,055.76
  5. Step 5: Solve for x
    x = 37,374,598,055.76/286,611.93
  6. Step 6: Final answer
    x = 130,401.40

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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.