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Finding the Fourth Proportional to 245,503.42, 338,743.91 and 143,509.16

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Solution

The fourth proportional to 245,503.42, 338,743.91 and 143,509.16 is: 198,012.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,503.42 : 338,743.91 = 143,509.16 : x
  2. Step 2: Convert to fraction form
    245,503.42/338,743.91 = 143,509.16/x
  3. Step 3: Cross multiply
    245,503.42x = 338,743.91 × 143,509.16
  4. Step 4: Simplify right side
    245,503.42x = 48,612,855,184.85
  5. Step 5: Solve for x
    x = 48,612,855,184.85/245,503.42
  6. Step 6: Final answer
    x = 198,012.95

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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.