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Finding the Fourth Proportional to 245,323.15, 338,496.31 and 143,328.91

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Solution

The fourth proportional to 245,323.15, 338,496.31 and 143,328.91 is: 197,764.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,323.15 : 338,496.31 = 143,328.91 : x
  2. Step 2: Convert to fraction form
    245,323.15/338,496.31 = 143,328.91/x
  3. Step 3: Cross multiply
    245,323.15x = 338,496.31 × 143,328.91
  4. Step 4: Simplify right side
    245,323.15x = 48,516,307,151.32
  5. Step 5: Solve for x
    x = 48,516,307,151.32/245,323.15
  6. Step 6: Final answer
    x = 197,764.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.