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Finding the Fourth Proportional to 315,423.99, 435,279.49 and 179,455.01

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Solution

The fourth proportional to 315,423.99, 435,279.49 and 179,455.01 is: 247,644.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,423.99 : 435,279.49 = 179,455.01 : x
  2. Step 2: Convert to fraction form
    315,423.99/435,279.49 = 179,455.01/x
  3. Step 3: Cross multiply
    315,423.99x = 435,279.49 × 179,455.01
  4. Step 4: Simplify right side
    315,423.99x = 78,113,084,333.47
  5. Step 5: Solve for x
    x = 78,113,084,333.47/315,423.99
  6. Step 6: Final answer
    x = 247,644.72

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1.5x scale

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.