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Finding the Fourth Proportional to 207,316.80, 310,976.64 and 88,888.32

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Solution

The fourth proportional to 207,316.80, 310,976.64 and 88,888.32 is: 133,333.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,316.80 : 310,976.64 = 88,888.32 : x
  2. Step 2: Convert to fraction form
    207,316.80/310,976.64 = 88,888.32/x
  3. Step 3: Cross multiply
    207,316.80x = 310,976.64 × 88,888.32
  4. Step 4: Simplify right side
    207,316.80x = 27,642,191,088.84
  5. Step 5: Solve for x
    x = 27,642,191,088.84/207,316.80
  6. Step 6: Final answer
    x = 133,333.10

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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.