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Finding the Fourth Proportional to 419,955.87, 579,541.86 and 228,972.45

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Solution

The fourth proportional to 419,955.87, 579,541.86 and 228,972.45 is: 315,983.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,955.87 : 579,541.86 = 228,972.45 : x
  2. Step 2: Convert to fraction form
    419,955.87/579,541.86 = 228,972.45/x
  3. Step 3: Cross multiply
    419,955.87x = 579,541.86 × 228,972.45
  4. Step 4: Simplify right side
    419,955.87x = 132,699,119,561.76
  5. Step 5: Solve for x
    x = 132,699,119,561.76/419,955.87
  6. Step 6: Final answer
    x = 315,983.49

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1.5x scale

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.