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Finding the Fourth Proportional to 238,382.66, 328,966.83 and 129,486.12

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Solution

The fourth proportional to 238,382.66, 328,966.83 and 129,486.12 is: 178,690.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,382.66 : 328,966.83 = 129,486.12 : x
  2. Step 2: Convert to fraction form
    238,382.66/328,966.83 = 129,486.12/x
  3. Step 3: Cross multiply
    238,382.66x = 328,966.83 × 129,486.12
  4. Step 4: Simplify right side
    238,382.66x = 42,596,638,299.08
  5. Step 5: Solve for x
    x = 42,596,638,299.08/238,382.66
  6. Step 6: Final answer
    x = 178,690.17

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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.