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Finding the Fourth Proportional to 287,876.55, 397,289.10 and 167,017.89

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Solution

The fourth proportional to 287,876.55, 397,289.10 and 167,017.89 is: 230,495.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,876.55 : 397,289.10 = 167,017.89 : x
  2. Step 2: Convert to fraction form
    287,876.55/397,289.10 = 167,017.89/x
  3. Step 3: Cross multiply
    287,876.55x = 397,289.10 × 167,017.89
  4. Step 4: Simplify right side
    287,876.55x = 66,354,387,202.00
  5. Step 5: Solve for x
    x = 66,354,387,202.00/287,876.55
  6. Step 6: Final answer
    x = 230,495.98

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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.