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Finding the Fourth Proportional to 208,681.35, 287,982.45 and 118,038.30

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Solution

The fourth proportional to 208,681.35, 287,982.45 and 118,038.30 is: 162,894.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,681.35 : 287,982.45 = 118,038.30 : x
  2. Step 2: Convert to fraction form
    208,681.35/287,982.45 = 118,038.30/x
  3. Step 3: Cross multiply
    208,681.35x = 287,982.45 × 118,038.30
  4. Step 4: Simplify right side
    208,681.35x = 33,992,958,827.84
  5. Step 5: Solve for x
    x = 33,992,958,827.84/208,681.35
  6. Step 6: Final answer
    x = 162,894.09

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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.