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Finding the Fourth Proportional to 201,645.30, 302,467.95 and 139,437.30

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Solution

The fourth proportional to 201,645.30, 302,467.95 and 139,437.30 is: 209,155.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,645.30 : 302,467.95 = 139,437.30 : x
  2. Step 2: Convert to fraction form
    201,645.30/302,467.95 = 139,437.30/x
  3. Step 3: Cross multiply
    201,645.30x = 302,467.95 × 139,437.30
  4. Step 4: Simplify right side
    201,645.30x = 42,175,314,284.54
  5. Step 5: Solve for x
    x = 42,175,314,284.54/201,645.30
  6. Step 6: Final answer
    x = 209,155.95

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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.