Home / 284,540.51-392,665.10-157,215.20

Finding the Fourth Proportional to 284,540.51, 392,665.10 and 157,215.20

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Solution

The fourth proportional to 284,540.51, 392,665.10 and 157,215.20 is: 216,956.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,540.51 : 392,665.10 = 157,215.20 : x
  2. Step 2: Convert to fraction form
    284,540.51/392,665.10 = 157,215.20/x
  3. Step 3: Cross multiply
    284,540.51x = 392,665.10 × 157,215.20
  4. Step 4: Simplify right side
    284,540.51x = 61,732,919,480.12
  5. Step 5: Solve for x
    x = 61,732,919,480.12/284,540.51
  6. Step 6: Final answer
    x = 216,956.53

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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.