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Finding the Fourth Proportional to 313,560.30, 432,715.43 and 170,320.31

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Solution

The fourth proportional to 313,560.30, 432,715.43 and 170,320.31 is: 235,043.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,560.30 : 432,715.43 = 170,320.31 : x
  2. Step 2: Convert to fraction form
    313,560.30/432,715.43 = 170,320.31/x
  3. Step 3: Cross multiply
    313,560.30x = 432,715.43 × 170,320.31
  4. Step 4: Simplify right side
    313,560.30x = 73,700,226,179.38
  5. Step 5: Solve for x
    x = 73,700,226,179.38/313,560.30
  6. Step 6: Final answer
    x = 235,043.23

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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.