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Finding the Fourth Proportional to 615,902.20, 849,969.25 and 354,257.01

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Solution

The fourth proportional to 615,902.20, 849,969.25 and 354,257.01 is: 488,888.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,902.20 : 849,969.25 = 354,257.01 : x
  2. Step 2: Convert to fraction form
    615,902.20/849,969.25 = 354,257.01/x
  3. Step 3: Cross multiply
    615,902.20x = 849,969.25 × 354,257.01
  4. Step 4: Simplify right side
    615,902.20x = 301,107,564,211.30
  5. Step 5: Solve for x
    x = 301,107,564,211.30/615,902.20
  6. Step 6: Final answer
    x = 488,888.60

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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.