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Finding the Fourth Proportional to 315,424.99, 435,280.87 and 179,456.01

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Solution

The fourth proportional to 315,424.99, 435,280.87 and 179,456.01 is: 247,646.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,424.99 : 435,280.87 = 179,456.01 : x
  2. Step 2: Convert to fraction form
    315,424.99/435,280.87 = 179,456.01/x
  3. Step 3: Cross multiply
    315,424.99x = 435,280.87 × 179,456.01
  4. Step 4: Simplify right side
    315,424.99x = 78,113,767,262.25
  5. Step 5: Solve for x
    x = 78,113,767,262.25/315,424.99
  6. Step 6: Final answer
    x = 247,646.10

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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.