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Finding the Fourth Proportional to 289,765.04, 434,396.28 and 112,149.80

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Solution

The fourth proportional to 289,765.04, 434,396.28 and 112,149.80 is: 168,127.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,765.04 : 434,396.28 = 112,149.80 : x
  2. Step 2: Convert to fraction form
    289,765.04/434,396.28 = 112,149.80/x
  3. Step 3: Cross multiply
    289,765.04x = 434,396.28 × 112,149.80
  4. Step 4: Simplify right side
    289,765.04x = 48,717,455,922.74
  5. Step 5: Solve for x
    x = 48,717,455,922.74/289,765.04
  6. Step 6: Final answer
    x = 168,127.45

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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.