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Finding the Fourth Proportional to 291,515.72, 402,392.34 and 170,695.84

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Solution

The fourth proportional to 291,515.72, 402,392.34 and 170,695.84 is: 235,619.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,515.72 : 402,392.34 = 170,695.84 : x
  2. Step 2: Convert to fraction form
    291,515.72/402,392.34 = 170,695.84/x
  3. Step 3: Cross multiply
    291,515.72x = 402,392.34 × 170,695.84
  4. Step 4: Simplify right side
    291,515.72x = 68,686,698,485.87
  5. Step 5: Solve for x
    x = 68,686,698,485.87/291,515.72
  6. Step 6: Final answer
    x = 235,619.19

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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.