Home / 278,302.12-384,030.66-157,428.52

Finding the Fourth Proportional to 278,302.12, 384,030.66 and 157,428.52

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Solution

The fourth proportional to 278,302.12, 384,030.66 and 157,428.52 is: 217,236.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,302.12 : 384,030.66 = 157,428.52 : x
  2. Step 2: Convert to fraction form
    278,302.12/384,030.66 = 157,428.52/x
  3. Step 3: Cross multiply
    278,302.12x = 384,030.66 × 157,428.52
  4. Step 4: Simplify right side
    278,302.12x = 60,457,378,438.42
  5. Step 5: Solve for x
    x = 60,457,378,438.42/278,302.12
  6. Step 6: Final answer
    x = 217,236.50

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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.