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Finding the Fourth Proportional to 402,802.80, 603,685.80 and 308,842.80

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Solution

The fourth proportional to 402,802.80, 603,685.80 and 308,842.80 is: 462,866.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,802.80 : 603,685.80 = 308,842.80 : x
  2. Step 2: Convert to fraction form
    402,802.80/603,685.80 = 308,842.80/x
  3. Step 3: Cross multiply
    402,802.80x = 603,685.80 × 308,842.80
  4. Step 4: Simplify right side
    402,802.80x = 186,444,012,792.24
  5. Step 5: Solve for x
    x = 186,444,012,792.24/402,802.80
  6. Step 6: Final answer
    x = 462,866.72

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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.