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Finding the Fourth Proportional to 356,510.90, 534,833.78 and 143,295.41

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Solution

The fourth proportional to 356,510.90, 534,833.78 and 143,295.41 is: 214,970.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,510.90 : 534,833.78 = 143,295.41 : x
  2. Step 2: Convert to fraction form
    356,510.90/534,833.78 = 143,295.41/x
  3. Step 3: Cross multiply
    356,510.90x = 534,833.78 × 143,295.41
  4. Step 4: Simplify right side
    356,510.90x = 76,639,225,476.65
  5. Step 5: Solve for x
    x = 76,639,225,476.65/356,510.90
  6. Step 6: Final answer
    x = 214,970.22

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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.