Home / 315,213.80-434,979.06-171,972.68

Finding the Fourth Proportional to 315,213.80, 434,979.06 and 171,972.68

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Solution

The fourth proportional to 315,213.80, 434,979.06 and 171,972.68 is: 237,313.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,213.80 : 434,979.06 = 171,972.68 : x
  2. Step 2: Convert to fraction form
    315,213.80/434,979.06 = 171,972.68/x
  3. Step 3: Cross multiply
    315,213.80x = 434,979.06 × 171,972.68
  4. Step 4: Simplify right side
    315,213.80x = 74,804,514,692.08
  5. Step 5: Solve for x
    x = 74,804,514,692.08/315,213.80
  6. Step 6: Final answer
    x = 237,313.58

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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.