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Finding the Fourth Proportional to 291,645.60, 402,523.12 and 170,779.83

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Solution

The fourth proportional to 291,645.60, 402,523.12 and 170,779.83 is: 235,706.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,645.60 : 402,523.12 = 170,779.83 : x
  2. Step 2: Convert to fraction form
    291,645.60/402,523.12 = 170,779.83/x
  3. Step 3: Cross multiply
    291,645.60x = 402,523.12 × 170,779.83
  4. Step 4: Simplify right side
    291,645.60x = 68,742,830,004.67
  5. Step 5: Solve for x
    x = 68,742,830,004.67/291,645.60
  6. Step 6: Final answer
    x = 235,706.73

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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.