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Finding the Fourth Proportional to 291,513.72, 402,389.58 and 170,693.84

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Solution

The fourth proportional to 291,513.72, 402,389.58 and 170,693.84 is: 235,616.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,513.72 : 402,389.58 = 170,693.84 : x
  2. Step 2: Convert to fraction form
    291,513.72/402,389.58 = 170,693.84/x
  3. Step 3: Cross multiply
    291,513.72x = 402,389.58 × 170,693.84
  4. Step 4: Simplify right side
    291,513.72x = 68,685,422,586.19
  5. Step 5: Solve for x
    x = 68,685,422,586.19/291,513.72
  6. Step 6: Final answer
    x = 235,616.43

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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.