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Finding the Fourth Proportional to 306,174.42, 459,159.39 and 128,648.34

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Solution

The fourth proportional to 306,174.42, 459,159.39 and 128,648.34 is: 192,929.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,174.42 : 459,159.39 = 128,648.34 : x
  2. Step 2: Convert to fraction form
    306,174.42/459,159.39 = 128,648.34/x
  3. Step 3: Cross multiply
    306,174.42x = 459,159.39 × 128,648.34
  4. Step 4: Simplify right side
    306,174.42x = 59,070,093,318.91
  5. Step 5: Solve for x
    x = 59,070,093,318.91/306,174.42
  6. Step 6: Final answer
    x = 192,929.55

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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.