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Finding the Fourth Proportional to 553,571.66, 830,358.30 and 154,213.58

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Solution

The fourth proportional to 553,571.66, 830,358.30 and 154,213.58 is: 231,320.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,571.66 : 830,358.30 = 154,213.58 : x
  2. Step 2: Convert to fraction form
    553,571.66/830,358.30 = 154,213.58/x
  3. Step 3: Cross multiply
    553,571.66x = 830,358.30 × 154,213.58
  4. Step 4: Simplify right side
    553,571.66x = 128,052,526,125.71
  5. Step 5: Solve for x
    x = 128,052,526,125.71/553,571.66
  6. Step 6: Final answer
    x = 231,320.60

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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.