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Finding the Fourth Proportional to 483,655.32, 725,482.11 and 128,669.34

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Solution

The fourth proportional to 483,655.32, 725,482.11 and 128,669.34 is: 193,003.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,655.32 : 725,482.11 = 128,669.34 : x
  2. Step 2: Convert to fraction form
    483,655.32/725,482.11 = 128,669.34/x
  3. Step 3: Cross multiply
    483,655.32x = 725,482.11 × 128,669.34
  4. Step 4: Simplify right side
    483,655.32x = 93,347,304,275.51
  5. Step 5: Solve for x
    x = 93,347,304,275.51/483,655.32
  6. Step 6: Final answer
    x = 193,003.78

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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.