Home / 230,012.22-317,416.80-128,035.47

Finding the Fourth Proportional to 230,012.22, 317,416.80 and 128,035.47

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Solution

The fourth proportional to 230,012.22, 317,416.80 and 128,035.47 is: 176,688.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,012.22 : 317,416.80 = 128,035.47 : x
  2. Step 2: Convert to fraction form
    230,012.22/317,416.80 = 128,035.47/x
  3. Step 3: Cross multiply
    230,012.22x = 317,416.80 × 128,035.47
  4. Step 4: Simplify right side
    230,012.22x = 40,640,609,173.90
  5. Step 5: Solve for x
    x = 40,640,609,173.90/230,012.22
  6. Step 6: Final answer
    x = 176,688.91

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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.