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Finding the Fourth Proportional to 208,358.79, 287,536.52 and 112,865.49

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Solution

The fourth proportional to 208,358.79, 287,536.52 and 112,865.49 is: 155,755.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,358.79 : 287,536.52 = 112,865.49 : x
  2. Step 2: Convert to fraction form
    208,358.79/287,536.52 = 112,865.49/x
  3. Step 3: Cross multiply
    208,358.79x = 287,536.52 × 112,865.49
  4. Step 4: Simplify right side
    208,358.79x = 32,452,950,222.69
  5. Step 5: Solve for x
    x = 32,452,950,222.69/208,358.79
  6. Step 6: Final answer
    x = 155,755.13

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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.