Home / 230,015.22-317,420.94-128,038.47

Finding the Fourth Proportional to 230,015.22, 317,420.94 and 128,038.47

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Solution

The fourth proportional to 230,015.22, 317,420.94 and 128,038.47 is: 176,693.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,015.22 : 317,420.94 = 128,038.47 : x
  2. Step 2: Convert to fraction form
    230,015.22/317,420.94 = 128,038.47/x
  3. Step 3: Cross multiply
    230,015.22x = 317,420.94 × 128,038.47
  4. Step 4: Simplify right side
    230,015.22x = 40,642,091,503.56
  5. Step 5: Solve for x
    x = 40,642,091,503.56/230,015.22
  6. Step 6: Final answer
    x = 176,693.05

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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.