Home / 218,819.36-328,914.24-144,417.68

Finding the Fourth Proportional to 218,819.36, 328,914.24 and 144,417.68

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Solution

The fourth proportional to 218,819.36, 328,914.24 and 144,417.68 is: 217,078.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,819.36 : 328,914.24 = 144,417.68 : x
  2. Step 2: Convert to fraction form
    218,819.36/328,914.24 = 144,417.68/x
  3. Step 3: Cross multiply
    218,819.36x = 328,914.24 × 144,417.68
  4. Step 4: Simplify right side
    218,819.36x = 47,501,031,459.76
  5. Step 5: Solve for x
    x = 47,501,031,459.76/218,819.36
  6. Step 6: Final answer
    x = 217,078.74

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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.