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Finding the Fourth Proportional to 223,568.64, 308,547.36 and 128,088

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Solution

The fourth proportional to 223,568.64, 308,547.36 and 128,088 is: 176,774.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,568.64 : 308,547.36 = 128,088 : x
  2. Step 2: Convert to fraction form
    223,568.64/308,547.36 = 128,088/x
  3. Step 3: Cross multiply
    223,568.64x = 308,547.36 × 128,088
  4. Step 4: Simplify right side
    223,568.64x = 39,521,214,247.68
  5. Step 5: Solve for x
    x = 39,521,214,247.68/223,568.64
  6. Step 6: Final answer
    x = 176,774.41

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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.