Home / 390,423.72-538,576.38-237,508.68

Finding the Fourth Proportional to 390,423.72, 538,576.38 and 237,508.68

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Solution

The fourth proportional to 390,423.72, 538,576.38 and 237,508.68 is: 327,635.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,423.72 : 538,576.38 = 237,508.68 : x
  2. Step 2: Convert to fraction form
    390,423.72/538,576.38 = 237,508.68/x
  3. Step 3: Cross multiply
    390,423.72x = 538,576.38 × 237,508.68
  4. Step 4: Simplify right side
    390,423.72x = 127,916,565,092.98
  5. Step 5: Solve for x
    x = 127,916,565,092.98/390,423.72
  6. Step 6: Final answer
    x = 327,635.23

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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.