Home / 208,403.28-287,564.04-123,506.64

Finding the Fourth Proportional to 208,403.28, 287,564.04 and 123,506.64

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Solution

The fourth proportional to 208,403.28, 287,564.04 and 123,506.64 is: 170,419.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,403.28 : 287,564.04 = 123,506.64 : x
  2. Step 2: Convert to fraction form
    208,403.28/287,564.04 = 123,506.64/x
  3. Step 3: Cross multiply
    208,403.28x = 287,564.04 × 123,506.64
  4. Step 4: Simplify right side
    208,403.28x = 35,516,068,365.23
  5. Step 5: Solve for x
    x = 35,516,068,365.23/208,403.28
  6. Step 6: Final answer
    x = 170,419.91

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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.