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Finding the Fourth Proportional to 448,696.08, 619,177.32 and 278,927.28

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Solution

The fourth proportional to 448,696.08, 619,177.32 and 278,927.28 is: 384,905.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,696.08 : 619,177.32 = 278,927.28 : x
  2. Step 2: Convert to fraction form
    448,696.08/619,177.32 = 278,927.28/x
  3. Step 3: Cross multiply
    448,696.08x = 619,177.32 × 278,927.28
  4. Step 4: Simplify right side
    448,696.08x = 172,705,445,705.29
  5. Step 5: Solve for x
    x = 172,705,445,705.29/448,696.08
  6. Step 6: Final answer
    x = 384,905.18

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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.