Home / 208,513.12-287,519.88-154,897.60

Finding the Fourth Proportional to 208,513.12, 287,519.88 and 154,897.60

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Solution

The fourth proportional to 208,513.12, 287,519.88 and 154,897.60 is: 213,589.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,513.12 : 287,519.88 = 154,897.60 : x
  2. Step 2: Convert to fraction form
    208,513.12/287,519.88 = 154,897.60/x
  3. Step 3: Cross multiply
    208,513.12x = 287,519.88 × 154,897.60
  4. Step 4: Simplify right side
    208,513.12x = 44,536,139,364.29
  5. Step 5: Solve for x
    x = 44,536,139,364.29/208,513.12
  6. Step 6: Final answer
    x = 213,589.15

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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.