Home / 291,343.10-402,053.28-170,507.42

Finding the Fourth Proportional to 291,343.10, 402,053.28 and 170,507.42

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Solution

The fourth proportional to 291,343.10, 402,053.28 and 170,507.42 is: 235,300.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,343.10 : 402,053.28 = 170,507.42 : x
  2. Step 2: Convert to fraction form
    291,343.10/402,053.28 = 170,507.42/x
  3. Step 3: Cross multiply
    291,343.10x = 402,053.28 × 170,507.42
  4. Step 4: Simplify right side
    291,343.10x = 68,553,067,475.34
  5. Step 5: Solve for x
    x = 68,553,067,475.34/291,343.10
  6. Step 6: Final answer
    x = 235,300.12

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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.