Home / 230,246.90-317,750.53-128,272.31

Finding the Fourth Proportional to 230,246.90, 317,750.53 and 128,272.31

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Solution

The fourth proportional to 230,246.90, 317,750.53 and 128,272.31 is: 177,021.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,246.90 : 317,750.53 = 128,272.31 : x
  2. Step 2: Convert to fraction form
    230,246.90/317,750.53 = 128,272.31/x
  3. Step 3: Cross multiply
    230,246.90x = 317,750.53 × 128,272.31
  4. Step 4: Simplify right side
    230,246.90x = 40,758,592,898.07
  5. Step 5: Solve for x
    x = 40,758,592,898.07/230,246.90
  6. Step 6: Final answer
    x = 177,021.25

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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.