Home / 689,430.14-1,034,145.50-216,152.40

Finding the Fourth Proportional to 689,430.14, 1,034,145.50 and 216,152.40

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Solution

The fourth proportional to 689,430.14, 1,034,145.50 and 216,152.40 is: 324,228.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,430.14 : 1,034,145.50 = 216,152.40 : x
  2. Step 2: Convert to fraction form
    689,430.14/1,034,145.50 = 216,152.40/x
  3. Step 3: Cross multiply
    689,430.14x = 1,034,145.50 × 216,152.40
  4. Step 4: Simplify right side
    689,430.14x = 223,533,027,143.85
  5. Step 5: Solve for x
    x = 223,533,027,143.85/689,430.14
  6. Step 6: Final answer
    x = 324,228.69

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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.