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Finding the Fourth Proportional to 279,071.64, 385,116.88 and 151,747.32

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Solution

The fourth proportional to 279,071.64, 385,116.88 and 151,747.32 is: 209,410.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,071.64 : 385,116.88 = 151,747.32 : x
  2. Step 2: Convert to fraction form
    279,071.64/385,116.88 = 151,747.32/x
  3. Step 3: Cross multiply
    279,071.64x = 385,116.88 × 151,747.32
  4. Step 4: Simplify right side
    279,071.64x = 58,440,454,426.76
  5. Step 5: Solve for x
    x = 58,440,454,426.76/279,071.64
  6. Step 6: Final answer
    x = 209,410.22

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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.