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Finding the Fourth Proportional to 553,853.39, 830,706.26 and 154,460.72

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Solution

The fourth proportional to 553,853.39, 830,706.26 and 154,460.72 is: 231,670.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,853.39 : 830,706.26 = 154,460.72 : x
  2. Step 2: Convert to fraction form
    553,853.39/830,706.26 = 154,460.72/x
  3. Step 3: Cross multiply
    553,853.39x = 830,706.26 × 154,460.72
  4. Step 4: Simplify right side
    553,853.39x = 128,311,483,260.73
  5. Step 5: Solve for x
    x = 128,311,483,260.73/553,853.39
  6. Step 6: Final answer
    x = 231,670.48

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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.