Home / 289,885.20-434,827.80-102,915.60

Finding the Fourth Proportional to 289,885.20, 434,827.80 and 102,915.60

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Solution

The fourth proportional to 289,885.20, 434,827.80 and 102,915.60 is: 154,373.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,885.20 : 434,827.80 = 102,915.60 : x
  2. Step 2: Convert to fraction form
    289,885.20/434,827.80 = 102,915.60/x
  3. Step 3: Cross multiply
    289,885.20x = 434,827.80 × 102,915.60
  4. Step 4: Simplify right side
    289,885.20x = 44,750,563,933.68
  5. Step 5: Solve for x
    x = 44,750,563,933.68/289,885.20
  6. Step 6: Final answer
    x = 154,373.40

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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.