Home / 458,826.40-688,239.60-143,315.20

Finding the Fourth Proportional to 458,826.40, 688,239.60 and 143,315.20

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Solution

The fourth proportional to 458,826.40, 688,239.60 and 143,315.20 is: 214,972.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,826.40 : 688,239.60 = 143,315.20 : x
  2. Step 2: Convert to fraction form
    458,826.40/688,239.60 = 143,315.20/x
  3. Step 3: Cross multiply
    458,826.40x = 688,239.60 × 143,315.20
  4. Step 4: Simplify right side
    458,826.40x = 98,635,195,921.92
  5. Step 5: Solve for x
    x = 98,635,195,921.92/458,826.40
  6. Step 6: Final answer
    x = 214,972.80

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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.