Home / 280,047.29-420,072.45-69,685.23

Finding the Fourth Proportional to 280,047.29, 420,072.45 and 69,685.23

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Solution

The fourth proportional to 280,047.29, 420,072.45 and 69,685.23 is: 104,528.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,047.29 : 420,072.45 = 69,685.23 : x
  2. Step 2: Convert to fraction form
    280,047.29/420,072.45 = 69,685.23/x
  3. Step 3: Cross multiply
    280,047.29x = 420,072.45 × 69,685.23
  4. Step 4: Simplify right side
    280,047.29x = 29,272,845,294.91
  5. Step 5: Solve for x
    x = 29,272,845,294.91/280,047.29
  6. Step 6: Final answer
    x = 104,528.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.