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Finding the Fourth Proportional to 279,054.60, 418,328.74 and 101,436.16

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Solution

The fourth proportional to 279,054.60, 418,328.74 and 101,436.16 is: 152,062.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,054.60 : 418,328.74 = 101,436.16 : x
  2. Step 2: Convert to fraction form
    279,054.60/418,328.74 = 101,436.16/x
  3. Step 3: Cross multiply
    279,054.60x = 418,328.74 × 101,436.16
  4. Step 4: Simplify right side
    279,054.60x = 42,433,661,003.24
  5. Step 5: Solve for x
    x = 42,433,661,003.24/279,054.60
  6. Step 6: Final answer
    x = 152,062.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.