Home / 289,929.40-434,915.70-102,916.60

Finding the Fourth Proportional to 289,929.40, 434,915.70 and 102,916.60

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Solution

The fourth proportional to 289,929.40, 434,915.70 and 102,916.60 is: 154,382.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,929.40 : 434,915.70 = 102,916.60 : x
  2. Step 2: Convert to fraction form
    289,929.40/434,915.70 = 102,916.60/x
  3. Step 3: Cross multiply
    289,929.40x = 434,915.70 × 102,916.60
  4. Step 4: Simplify right side
    289,929.40x = 44,760,045,130.62
  5. Step 5: Solve for x
    x = 44,760,045,130.62/289,929.40
  6. Step 6: Final answer
    x = 154,382.57

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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.