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Finding the Fourth Proportional to 553,877.65, 830,484.28 and 253,982.54

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Solution

The fourth proportional to 553,877.65, 830,484.28 and 253,982.54 is: 380,821.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,877.65 : 830,484.28 = 253,982.54 : x
  2. Step 2: Convert to fraction form
    553,877.65/830,484.28 = 253,982.54/x
  3. Step 3: Cross multiply
    553,877.65x = 830,484.28 × 253,982.54
  4. Step 4: Simplify right side
    553,877.65x = 210,928,505,493.77
  5. Step 5: Solve for x
    x = 210,928,505,493.77/553,877.65
  6. Step 6: Final answer
    x = 380,821.48

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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.