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Finding the Fourth Proportional to 553,422.13, 830,050.56 and 154,021.27

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Solution

The fourth proportional to 553,422.13, 830,050.56 and 154,021.27 is: 231,008.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,422.13 : 830,050.56 = 154,021.27 : x
  2. Step 2: Convert to fraction form
    553,422.13/830,050.56 = 154,021.27/x
  3. Step 3: Cross multiply
    553,422.13x = 830,050.56 × 154,021.27
  4. Step 4: Simplify right side
    553,422.13x = 127,845,441,415.41
  5. Step 5: Solve for x
    x = 127,845,441,415.41/553,422.13
  6. Step 6: Final answer
    x = 231,008.91

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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.