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Finding the Fourth Proportional to 553,837.62, 830,282.55 and 212,525.97

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Solution

The fourth proportional to 553,837.62, 830,282.55 and 212,525.97 is: 318,607.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,837.62 : 830,282.55 = 212,525.97 : x
  2. Step 2: Convert to fraction form
    553,837.62/830,282.55 = 212,525.97/x
  3. Step 3: Cross multiply
    553,837.62x = 830,282.55 × 212,525.97
  4. Step 4: Simplify right side
    553,837.62x = 176,456,603,932.92
  5. Step 5: Solve for x
    x = 176,456,603,932.92/553,837.62
  6. Step 6: Final answer
    x = 318,607.11

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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.