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Finding the Fourth Proportional to 291,361.10, 402,078.20 and 170,525.40

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Solution

The fourth proportional to 291,361.10, 402,078.20 and 170,525.40 is: 235,324.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,361.10 : 402,078.20 = 170,525.40 : x
  2. Step 2: Convert to fraction form
    291,361.10/402,078.20 = 170,525.40/x
  3. Step 3: Cross multiply
    291,361.10x = 402,078.20 × 170,525.40
  4. Step 4: Simplify right side
    291,361.10x = 68,564,545,886.28
  5. Step 5: Solve for x
    x = 68,564,545,886.28/291,361.10
  6. Step 6: Final answer
    x = 235,324.98

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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.