Home / 286,450.79-429,698.06-86,787.72

Finding the Fourth Proportional to 286,450.79, 429,698.06 and 86,787.72

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Solution

The fourth proportional to 286,450.79, 429,698.06 and 86,787.72 is: 130,188.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,450.79 : 429,698.06 = 86,787.72 : x
  2. Step 2: Convert to fraction form
    286,450.79/429,698.06 = 86,787.72/x
  3. Step 3: Cross multiply
    286,450.79x = 429,698.06 × 86,787.72
  4. Step 4: Simplify right side
    286,450.79x = 37,292,514,915.82
  5. Step 5: Solve for x
    x = 37,292,514,915.82/286,450.79
  6. Step 6: Final answer
    x = 130,188.21

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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.