Home / 278,700.71-384,541.09-163,984.37

Finding the Fourth Proportional to 278,700.71, 384,541.09 and 163,984.37

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Solution

The fourth proportional to 278,700.71, 384,541.09 and 163,984.37 is: 226,259.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,700.71 : 384,541.09 = 163,984.37 : x
  2. Step 2: Convert to fraction form
    278,700.71/384,541.09 = 163,984.37/x
  3. Step 3: Cross multiply
    278,700.71x = 384,541.09 × 163,984.37
  4. Step 4: Simplify right side
    278,700.71x = 63,058,726,050.10
  5. Step 5: Solve for x
    x = 63,058,726,050.10/278,700.71
  6. Step 6: Final answer
    x = 226,259.66

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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.