Home / 219,498.28-302,901.43-128,852.80

Finding the Fourth Proportional to 219,498.28, 302,901.43 and 128,852.80

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Solution

The fourth proportional to 219,498.28, 302,901.43 and 128,852.80 is: 177,813.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,498.28 : 302,901.43 = 128,852.80 : x
  2. Step 2: Convert to fraction form
    219,498.28/302,901.43 = 128,852.80/x
  3. Step 3: Cross multiply
    219,498.28x = 302,901.43 × 128,852.80
  4. Step 4: Simplify right side
    219,498.28x = 39,029,696,300.12
  5. Step 5: Solve for x
    x = 39,029,696,300.12/219,498.28
  6. Step 6: Final answer
    x = 177,813.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.