Home / 282,638.72-390,068.56-161,755.84

Finding the Fourth Proportional to 282,638.72, 390,068.56 and 161,755.84

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Solution

The fourth proportional to 282,638.72, 390,068.56 and 161,755.84 is: 223,238.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,638.72 : 390,068.56 = 161,755.84 : x
  2. Step 2: Convert to fraction form
    282,638.72/390,068.56 = 161,755.84/x
  3. Step 3: Cross multiply
    282,638.72x = 390,068.56 × 161,755.84
  4. Step 4: Simplify right side
    282,638.72x = 63,095,867,580.39
  5. Step 5: Solve for x
    x = 63,095,867,580.39/282,638.72
  6. Step 6: Final answer
    x = 223,238.58

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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.