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Finding the Fourth Proportional to 208,123.58, 287,210.54 and 112,630.30

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Solution

The fourth proportional to 208,123.58, 287,210.54 and 112,630.30 is: 155,429.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,123.58 : 287,210.54 = 112,630.30 : x
  2. Step 2: Convert to fraction form
    208,123.58/287,210.54 = 112,630.30/x
  3. Step 3: Cross multiply
    208,123.58x = 287,210.54 × 112,630.30
  4. Step 4: Simplify right side
    208,123.58x = 32,348,608,846.91
  5. Step 5: Solve for x
    x = 32,348,608,846.91/208,123.58
  6. Step 6: Final answer
    x = 155,429.81

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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.