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Finding the Fourth Proportional to 208,247.48, 312,495.60 and 191,307.68

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Solution

The fourth proportional to 208,247.48, 312,495.60 and 191,307.68 is: 287,075.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,247.48 : 312,495.60 = 191,307.68 : x
  2. Step 2: Convert to fraction form
    208,247.48/312,495.60 = 191,307.68/x
  3. Step 3: Cross multiply
    208,247.48x = 312,495.60 × 191,307.68
  4. Step 4: Simplify right side
    208,247.48x = 59,782,808,246.21
  5. Step 5: Solve for x
    x = 59,782,808,246.21/208,247.48
  6. Step 6: Final answer
    x = 287,075.78

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1.5x scale

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.