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Finding the Fourth Proportional to 553,449.80, 830,175.30 and 154,091.45

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Solution

The fourth proportional to 553,449.80, 830,175.30 and 154,091.45 is: 231,137.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,449.80 : 830,175.30 = 154,091.45 : x
  2. Step 2: Convert to fraction form
    553,449.80/830,175.30 = 154,091.45/x
  3. Step 3: Cross multiply
    553,449.80x = 830,175.30 × 154,091.45
  4. Step 4: Simplify right side
    553,449.80x = 127,922,911,580.31
  5. Step 5: Solve for x
    x = 127,922,911,580.31/553,449.80
  6. Step 6: Final answer
    x = 231,137.34

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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.