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Finding the Fourth Proportional to 611,437.50, 843,783.75 and 343,165.50

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Solution

The fourth proportional to 611,437.50, 843,783.75 and 343,165.50 is: 473,568.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,437.50 : 843,783.75 = 343,165.50 : x
  2. Step 2: Convert to fraction form
    611,437.50/843,783.75 = 343,165.50/x
  3. Step 3: Cross multiply
    611,437.50x = 843,783.75 × 343,165.50
  4. Step 4: Simplify right side
    611,437.50x = 289,557,472,460.63
  5. Step 5: Solve for x
    x = 289,557,472,460.63/611,437.50
  6. Step 6: Final answer
    x = 473,568.39

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.