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Finding the Fourth Proportional to 426,552.48, 638,970.32 and 202,129.32

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Solution

The fourth proportional to 426,552.48, 638,970.32 and 202,129.32 is: 302,787.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,552.48 : 638,970.32 = 202,129.32 : x
  2. Step 2: Convert to fraction form
    426,552.48/638,970.32 = 202,129.32/x
  3. Step 3: Cross multiply
    426,552.48x = 638,970.32 × 202,129.32
  4. Step 4: Simplify right side
    426,552.48x = 129,154,639,183.24
  5. Step 5: Solve for x
    x = 129,154,639,183.24/426,552.48
  6. Step 6: Final answer
    x = 302,787.22

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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.