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Finding the Fourth Proportional to 419,657.25, 579,127.73 and 228,670.63

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Solution

The fourth proportional to 419,657.25, 579,127.73 and 228,670.63 is: 315,565.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,657.25 : 579,127.73 = 228,670.63 : x
  2. Step 2: Convert to fraction form
    419,657.25/579,127.73 = 228,670.63/x
  3. Step 3: Cross multiply
    419,657.25x = 579,127.73 × 228,670.63
  4. Step 4: Simplify right side
    419,657.25x = 132,429,500,278.40
  5. Step 5: Solve for x
    x = 132,429,500,278.40/419,657.25
  6. Step 6: Final answer
    x = 315,565.86

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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.