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Finding the Fourth Proportional to 291,651.50, 402,507.64 and 170,785.34

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Solution

The fourth proportional to 291,651.50, 402,507.64 and 170,785.34 is: 235,700.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,651.50 : 402,507.64 = 170,785.34 : x
  2. Step 2: Convert to fraction form
    291,651.50/402,507.64 = 170,785.34/x
  3. Step 3: Cross multiply
    291,651.50x = 402,507.64 × 170,785.34
  4. Step 4: Simplify right side
    291,651.50x = 68,742,401,710.50
  5. Step 5: Solve for x
    x = 68,742,401,710.50/291,651.50
  6. Step 6: Final answer
    x = 235,700.49

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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.