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Finding the Fourth Proportional to 353,606.20, 529,631.70 and 345,830.20

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Solution

The fourth proportional to 353,606.20, 529,631.70 and 345,830.20 is: 517,984.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,606.20 : 529,631.70 = 345,830.20 : x
  2. Step 2: Convert to fraction form
    353,606.20/529,631.70 = 345,830.20/x
  3. Step 3: Cross multiply
    353,606.20x = 529,631.70 × 345,830.20
  4. Step 4: Simplify right side
    353,606.20x = 183,162,636,737.34
  5. Step 5: Solve for x
    x = 183,162,636,737.34/353,606.20
  6. Step 6: Final answer
    x = 517,984.80

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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.