Home / 208,275.20-287,420.16-123,434.24

Finding the Fourth Proportional to 208,275.20, 287,420.16 and 123,434.24

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Solution

The fourth proportional to 208,275.20, 287,420.16 and 123,434.24 is: 170,339.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,275.20 : 287,420.16 = 123,434.24 : x
  2. Step 2: Convert to fraction form
    208,275.20/287,420.16 = 123,434.24/x
  3. Step 3: Cross multiply
    208,275.20x = 287,420.16 × 123,434.24
  4. Step 4: Simplify right side
    208,275.20x = 35,477,489,010.28
  5. Step 5: Solve for x
    x = 35,477,489,010.28/208,275.20
  6. Step 6: Final answer
    x = 170,339.48

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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.