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Finding the Fourth Proportional to 343,670.80, 515,068.80 and 306,054.40

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Solution

The fourth proportional to 343,670.80, 515,068.80 and 306,054.40 is: 458,692.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,670.80 : 515,068.80 = 306,054.40 : x
  2. Step 2: Convert to fraction form
    343,670.80/515,068.80 = 306,054.40/x
  3. Step 3: Cross multiply
    343,670.80x = 515,068.80 × 306,054.40
  4. Step 4: Simplify right side
    343,670.80x = 157,639,072,542.72
  5. Step 5: Solve for x
    x = 157,639,072,542.72/343,670.80
  6. Step 6: Final answer
    x = 458,692.08

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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.