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Finding the Fourth Proportional to 458,424.84, 687,621.98 and 188,543.64

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Solution

The fourth proportional to 458,424.84, 687,621.98 and 188,543.64 is: 282,809.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,424.84 : 687,621.98 = 188,543.64 : x
  2. Step 2: Convert to fraction form
    458,424.84/687,621.98 = 188,543.64/x
  3. Step 3: Cross multiply
    458,424.84x = 687,621.98 × 188,543.64
  4. Step 4: Simplify right side
    458,424.84x = 129,646,751,053.21
  5. Step 5: Solve for x
    x = 129,646,751,053.21/458,424.84
  6. Step 6: Final answer
    x = 282,809.18

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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.