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Finding the Fourth Proportional to 208,001.90, 287,041.86 and 112,508.60

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Solution

The fourth proportional to 208,001.90, 287,041.86 and 112,508.60 is: 155,261.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,001.90 : 287,041.86 = 112,508.60 : x
  2. Step 2: Convert to fraction form
    208,001.90/287,041.86 = 112,508.60/x
  3. Step 3: Cross multiply
    208,001.90x = 287,041.86 × 112,508.60
  4. Step 4: Simplify right side
    208,001.90x = 32,294,677,810.00
  5. Step 5: Solve for x
    x = 32,294,677,810.00/208,001.90
  6. Step 6: Final answer
    x = 155,261.46

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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.