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Finding the Fourth Proportional to 637,494.78, 956,416.80 and 188,215.50

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Solution

The fourth proportional to 637,494.78, 956,416.80 and 188,215.50 is: 282,374.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,494.78 : 956,416.80 = 188,215.50 : x
  2. Step 2: Convert to fraction form
    637,494.78/956,416.80 = 188,215.50/x
  3. Step 3: Cross multiply
    637,494.78x = 956,416.80 × 188,215.50
  4. Step 4: Simplify right side
    637,494.78x = 180,012,466,220.40
  5. Step 5: Solve for x
    x = 180,012,466,220.40/637,494.78
  6. Step 6: Final answer
    x = 282,374.81

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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.