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Finding the Fourth Proportional to 405,950.88, 608,984.64 and 125,490

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Solution

The fourth proportional to 405,950.88, 608,984.64 and 125,490 is: 188,253.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,950.88 : 608,984.64 = 125,490 : x
  2. Step 2: Convert to fraction form
    405,950.88/608,984.64 = 125,490/x
  3. Step 3: Cross multiply
    405,950.88x = 608,984.64 × 125,490
  4. Step 4: Simplify right side
    405,950.88x = 76,421,482,473.60
  5. Step 5: Solve for x
    x = 76,421,482,473.60/405,950.88
  6. Step 6: Final answer
    x = 188,253.03

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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.