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Finding the Fourth Proportional to 403,081.16, 604,725.61 and 289,360.80

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Solution

The fourth proportional to 403,081.16, 604,725.61 and 289,360.80 is: 434,115.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,081.16 : 604,725.61 = 289,360.80 : x
  2. Step 2: Convert to fraction form
    403,081.16/604,725.61 = 289,360.80/x
  3. Step 3: Cross multiply
    403,081.16x = 604,725.61 × 289,360.80
  4. Step 4: Simplify right side
    403,081.16x = 174,983,885,566.69
  5. Step 5: Solve for x
    x = 174,983,885,566.69/403,081.16
  6. Step 6: Final answer
    x = 434,115.77

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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.