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Finding the Fourth Proportional to 315,030.64, 434,825.16 and 179,144.24

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Solution

The fourth proportional to 315,030.64, 434,825.16 and 179,144.24 is: 247,266.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,030.64 : 434,825.16 = 179,144.24 : x
  2. Step 2: Convert to fraction form
    315,030.64/434,825.16 = 179,144.24/x
  3. Step 3: Cross multiply
    315,030.64x = 434,825.16 × 179,144.24
  4. Step 4: Simplify right side
    315,030.64x = 77,896,422,821.08
  5. Step 5: Solve for x
    x = 77,896,422,821.08/315,030.64
  6. Step 6: Final answer
    x = 247,266.18

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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.