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Finding the Fourth Proportional to 659,455.40, 989,072.40 and 186,029.84

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Solution

The fourth proportional to 659,455.40, 989,072.40 and 186,029.84 is: 279,013.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,455.40 : 989,072.40 = 186,029.84 : x
  2. Step 2: Convert to fraction form
    659,455.40/989,072.40 = 186,029.84/x
  3. Step 3: Cross multiply
    659,455.40x = 989,072.40 × 186,029.84
  4. Step 4: Simplify right side
    659,455.40x = 183,996,980,320.42
  5. Step 5: Solve for x
    x = 183,996,980,320.42/659,455.40
  6. Step 6: Final answer
    x = 279,013.53

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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.