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Finding the Fourth Proportional to 435,739.20, 653,479.20 and 169,346.40

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Solution

The fourth proportional to 435,739.20, 653,479.20 and 169,346.40 is: 253,969.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    435,739.20 : 653,479.20 = 169,346.40 : x
  2. Step 2: Convert to fraction form
    435,739.20/653,479.20 = 169,346.40/x
  3. Step 3: Cross multiply
    435,739.20x = 653,479.20 × 169,346.40
  4. Step 4: Simplify right side
    435,739.20x = 110,664,349,994.88
  5. Step 5: Solve for x
    x = 110,664,349,994.88/435,739.20
  6. Step 6: Final answer
    x = 253,969.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.