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Finding the Fourth Proportional to 279,352.94, 385,515.76 and 158,499.32

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Solution

The fourth proportional to 279,352.94, 385,515.76 and 158,499.32 is: 218,734.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,352.94 : 385,515.76 = 158,499.32 : x
  2. Step 2: Convert to fraction form
    279,352.94/385,515.76 = 158,499.32/x
  3. Step 3: Cross multiply
    279,352.94x = 385,515.76 × 158,499.32
  4. Step 4: Simplify right side
    279,352.94x = 61,103,985,809.28
  5. Step 5: Solve for x
    x = 61,103,985,809.28/279,352.94
  6. Step 6: Final answer
    x = 218,734.00

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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.