Home / 145,620.40-218,430.68-40,439.36

Finding the Fourth Proportional to 145,620.40, 218,430.68 and 40,439.36

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Solution

The fourth proportional to 145,620.40, 218,430.68 and 40,439.36 is: 60,659.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,620.40 : 218,430.68 = 40,439.36 : x
  2. Step 2: Convert to fraction form
    145,620.40/218,430.68 = 40,439.36/x
  3. Step 3: Cross multiply
    145,620.40x = 218,430.68 × 40,439.36
  4. Step 4: Simplify right side
    145,620.40x = 8,833,196,903.56
  5. Step 5: Solve for x
    x = 8,833,196,903.56/145,620.40
  6. Step 6: Final answer
    x = 60,659.06

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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.