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Finding the Fourth Proportional to 238,358.68, 328,936.94 and 130,931.11

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Solution

The fourth proportional to 238,358.68, 328,936.94 and 130,931.11 is: 180,686.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,358.68 : 328,936.94 = 130,931.11 : x
  2. Step 2: Convert to fraction form
    238,358.68/328,936.94 = 130,931.11/x
  3. Step 3: Cross multiply
    238,358.68x = 328,936.94 × 130,931.11
  4. Step 4: Simplify right side
    238,358.68x = 43,068,078,674.20
  5. Step 5: Solve for x
    x = 43,068,078,674.20/238,358.68
  6. Step 6: Final answer
    x = 180,686.01

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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.