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Finding the Fourth Proportional to 351,143.40, 526,715.10 and 345,894.60

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Solution

The fourth proportional to 351,143.40, 526,715.10 and 345,894.60 is: 518,841.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,143.40 : 526,715.10 = 345,894.60 : x
  2. Step 2: Convert to fraction form
    351,143.40/526,715.10 = 345,894.60/x
  3. Step 3: Cross multiply
    351,143.40x = 526,715.10 × 345,894.60
  4. Step 4: Simplify right side
    351,143.40x = 182,187,908,828.46
  5. Step 5: Solve for x
    x = 182,187,908,828.46/351,143.40
  6. Step 6: Final answer
    x = 518,841.90

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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.