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Finding the Fourth Proportional to 379,590.87, 569,386.52 and 99,108.12

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Solution

The fourth proportional to 379,590.87, 569,386.52 and 99,108.12 is: 148,662.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,590.87 : 569,386.52 = 99,108.12 : x
  2. Step 2: Convert to fraction form
    379,590.87/569,386.52 = 99,108.12/x
  3. Step 3: Cross multiply
    379,590.87x = 569,386.52 × 99,108.12
  4. Step 4: Simplify right side
    379,590.87x = 56,430,827,550.54
  5. Step 5: Solve for x
    x = 56,430,827,550.54/379,590.87
  6. Step 6: Final answer
    x = 148,662.24

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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.