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Finding the Fourth Proportional to 352,817.78, 529,235.31 and 103,507.70

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Solution

The fourth proportional to 352,817.78, 529,235.31 and 103,507.70 is: 155,264.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,817.78 : 529,235.31 = 103,507.70 : x
  2. Step 2: Convert to fraction form
    352,817.78/529,235.31 = 103,507.70/x
  3. Step 3: Cross multiply
    352,817.78x = 529,235.31 × 103,507.70
  4. Step 4: Simplify right side
    352,817.78x = 54,779,929,696.89
  5. Step 5: Solve for x
    x = 54,779,929,696.89/352,817.78
  6. Step 6: Final answer
    x = 155,264.08

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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.