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Finding the Fourth Proportional to 313,661.43, 432,856.71 and 170,423.87

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Solution

The fourth proportional to 313,661.43, 432,856.71 and 170,423.87 is: 235,187.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,661.43 : 432,856.71 = 170,423.87 : x
  2. Step 2: Convert to fraction form
    313,661.43/432,856.71 = 170,423.87/x
  3. Step 3: Cross multiply
    313,661.43x = 432,856.71 × 170,423.87
  4. Step 4: Simplify right side
    313,661.43x = 73,769,113,509.38
  5. Step 5: Solve for x
    x = 73,769,113,509.38/313,661.43
  6. Step 6: Final answer
    x = 235,187.07

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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.