Home / 230,366.36-317,931.39-128,401.13

Finding the Fourth Proportional to 230,366.36, 317,931.39 and 128,401.13

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Solution

The fourth proportional to 230,366.36, 317,931.39 and 128,401.13 is: 177,207.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,366.36 : 317,931.39 = 128,401.13 : x
  2. Step 2: Convert to fraction form
    230,366.36/317,931.39 = 128,401.13/x
  3. Step 3: Cross multiply
    230,366.36x = 317,931.39 × 128,401.13
  4. Step 4: Simplify right side
    230,366.36x = 40,822,748,148.81
  5. Step 5: Solve for x
    x = 40,822,748,148.81/230,366.36
  6. Step 6: Final answer
    x = 177,207.94

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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.