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Finding the Fourth Proportional to 238,139.64, 328,649.13 and 157,427.19

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Solution

The fourth proportional to 238,139.64, 328,649.13 and 157,427.19 is: 217,260.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,139.64 : 328,649.13 = 157,427.19 : x
  2. Step 2: Convert to fraction form
    238,139.64/328,649.13 = 157,427.19/x
  3. Step 3: Cross multiply
    238,139.64x = 328,649.13 × 157,427.19
  4. Step 4: Simplify right side
    238,139.64x = 51,738,309,031.84
  5. Step 5: Solve for x
    x = 51,738,309,031.84/238,139.64
  6. Step 6: Final answer
    x = 217,260.38

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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.