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Finding the Fourth Proportional to 343,457.20, 514,945.80 and 203,143.60

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Solution

The fourth proportional to 343,457.20, 514,945.80 and 203,143.60 is: 304,573.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,457.20 : 514,945.80 = 203,143.60 : x
  2. Step 2: Convert to fraction form
    343,457.20/514,945.80 = 203,143.60/x
  3. Step 3: Cross multiply
    343,457.20x = 514,945.80 × 203,143.60
  4. Step 4: Simplify right side
    343,457.20x = 104,607,943,616.88
  5. Step 5: Solve for x
    x = 104,607,943,616.88/343,457.20
  6. Step 6: Final answer
    x = 304,573.45

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1.5x scale

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.