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Finding the Fourth Proportional to 340,810.60, 511,211.10 and 153,821.80

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Solution

The fourth proportional to 340,810.60, 511,211.10 and 153,821.80 is: 230,730.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,810.60 : 511,211.10 = 153,821.80 : x
  2. Step 2: Convert to fraction form
    340,810.60/511,211.10 = 153,821.80/x
  3. Step 3: Cross multiply
    340,810.60x = 511,211.10 × 153,821.80
  4. Step 4: Simplify right side
    340,810.60x = 78,635,411,581.98
  5. Step 5: Solve for x
    x = 78,635,411,581.98/340,810.60
  6. Step 6: Final answer
    x = 230,730.53

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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.