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Finding the Fourth Proportional to 208,423.83, 287,625.14 and 112,930.45

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Solution

The fourth proportional to 208,423.83, 287,625.14 and 112,930.45 is: 155,844.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,423.83 : 287,625.14 = 112,930.45 : x
  2. Step 2: Convert to fraction form
    208,423.83/287,625.14 = 112,930.45/x
  3. Step 3: Cross multiply
    208,423.83x = 287,625.14 × 112,930.45
  4. Step 4: Simplify right side
    208,423.83x = 32,481,636,491.51
  5. Step 5: Solve for x
    x = 32,481,636,491.51/208,423.83
  6. Step 6: Final answer
    x = 155,844.16

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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.