Home / 219,036.02-302,212.56-128,343.28

Finding the Fourth Proportional to 219,036.02, 302,212.56 and 128,343.28

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Solution

The fourth proportional to 219,036.02, 302,212.56 and 128,343.28 is: 177,080.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,036.02 : 302,212.56 = 128,343.28 : x
  2. Step 2: Convert to fraction form
    219,036.02/302,212.56 = 128,343.28/x
  3. Step 3: Cross multiply
    219,036.02x = 302,212.56 × 128,343.28
  4. Step 4: Simplify right side
    219,036.02x = 38,786,951,207.60
  5. Step 5: Solve for x
    x = 38,786,951,207.60/219,036.02
  6. Step 6: Final answer
    x = 177,080.24

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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.