Home / 230,445.29-317,988.83-128,463.05

Finding the Fourth Proportional to 230,445.29, 317,988.83 and 128,463.05

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Solution

The fourth proportional to 230,445.29, 317,988.83 and 128,463.05 is: 177,264.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,445.29 : 317,988.83 = 128,463.05 : x
  2. Step 2: Convert to fraction form
    230,445.29/317,988.83 = 128,463.05/x
  3. Step 3: Cross multiply
    230,445.29x = 317,988.83 × 128,463.05
  4. Step 4: Simplify right side
    230,445.29x = 40,849,812,735.47
  5. Step 5: Solve for x
    x = 40,849,812,735.47/230,445.29
  6. Step 6: Final answer
    x = 177,264.69

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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.