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Finding the Fourth Proportional to 559,088.56, 771,339.61 and 317,231.07

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Solution

The fourth proportional to 559,088.56, 771,339.61 and 317,231.07 is: 437,663.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,088.56 : 771,339.61 = 317,231.07 : x
  2. Step 2: Convert to fraction form
    559,088.56/771,339.61 = 317,231.07/x
  3. Step 3: Cross multiply
    559,088.56x = 771,339.61 × 317,231.07
  4. Step 4: Simplify right side
    559,088.56x = 244,692,887,317.70
  5. Step 5: Solve for x
    x = 244,692,887,317.70/559,088.56
  6. Step 6: Final answer
    x = 437,663.91

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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.