Home / 219,870.57-303,428.85-129,225.24

Finding the Fourth Proportional to 219,870.57, 303,428.85 and 129,225.24

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Solution

The fourth proportional to 219,870.57, 303,428.85 and 129,225.24 is: 178,335.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,870.57 : 303,428.85 = 129,225.24 : x
  2. Step 2: Convert to fraction form
    219,870.57/303,428.85 = 129,225.24/x
  3. Step 3: Cross multiply
    219,870.57x = 303,428.85 × 129,225.24
  4. Step 4: Simplify right side
    219,870.57x = 39,210,665,964.17
  5. Step 5: Solve for x
    x = 39,210,665,964.17/219,870.57
  6. Step 6: Final answer
    x = 178,335.22

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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.