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Finding the Fourth Proportional to 354,303.74, 489,075.67 and 259,562.94

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Solution

The fourth proportional to 354,303.74, 489,075.67 and 259,562.94 is: 358,296.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,303.74 : 489,075.67 = 259,562.94 : x
  2. Step 2: Convert to fraction form
    354,303.74/489,075.67 = 259,562.94/x
  3. Step 3: Cross multiply
    354,303.74x = 489,075.67 × 259,562.94
  4. Step 4: Simplify right side
    354,303.74x = 126,945,918,787.67
  5. Step 5: Solve for x
    x = 126,945,918,787.67/354,303.74
  6. Step 6: Final answer
    x = 358,296.86

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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.