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Finding the Fourth Proportional to 252,838.76, 348,916.43 and 139,661.51

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Solution

The fourth proportional to 252,838.76, 348,916.43 and 139,661.51 is: 192,732.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,838.76 : 348,916.43 = 139,661.51 : x
  2. Step 2: Convert to fraction form
    252,838.76/348,916.43 = 139,661.51/x
  3. Step 3: Cross multiply
    252,838.76x = 348,916.43 × 139,661.51
  4. Step 4: Simplify right side
    252,838.76x = 48,730,194,779.30
  5. Step 5: Solve for x
    x = 48,730,194,779.30/252,838.76
  6. Step 6: Final answer
    x = 192,732.30

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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.