Home / 371,578.18-512,760.75-210,434.40

Finding the Fourth Proportional to 371,578.18, 512,760.75 and 210,434.40

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Solution

The fourth proportional to 371,578.18, 512,760.75 and 210,434.40 is: 290,389.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,578.18 : 512,760.75 = 210,434.40 : x
  2. Step 2: Convert to fraction form
    371,578.18/512,760.75 = 210,434.40/x
  3. Step 3: Cross multiply
    371,578.18x = 512,760.75 × 210,434.40
  4. Step 4: Simplify right side
    371,578.18x = 107,902,500,769.80
  5. Step 5: Solve for x
    x = 107,902,500,769.80/371,578.18
  6. Step 6: Final answer
    x = 290,389.77

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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.