Home / 219,034.02-302,209.80-128,341.28

Finding the Fourth Proportional to 219,034.02, 302,209.80 and 128,341.28

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Solution

The fourth proportional to 219,034.02, 302,209.80 and 128,341.28 is: 177,077.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,034.02 : 302,209.80 = 128,341.28 : x
  2. Step 2: Convert to fraction form
    219,034.02/302,209.80 = 128,341.28/x
  3. Step 3: Cross multiply
    219,034.02x = 302,209.80 × 128,341.28
  4. Step 4: Simplify right side
    219,034.02x = 38,785,992,560.54
  5. Step 5: Solve for x
    x = 38,785,992,560.54/219,034.02
  6. Step 6: Final answer
    x = 177,077.48

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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.