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Finding the Fourth Proportional to 238,137.57, 328,578.53 and 137,477.25

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Solution

The fourth proportional to 238,137.57, 328,578.53 and 137,477.25 is: 189,688.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,137.57 : 328,578.53 = 137,477.25 : x
  2. Step 2: Convert to fraction form
    238,137.57/328,578.53 = 137,477.25/x
  3. Step 3: Cross multiply
    238,137.57x = 328,578.53 × 137,477.25
  4. Step 4: Simplify right side
    238,137.57x = 45,172,072,026.06
  5. Step 5: Solve for x
    x = 45,172,072,026.06/238,137.57
  6. Step 6: Final answer
    x = 189,688.98

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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.