Home / 287,711,999.70-431,567,999.55-164,890,079.70

Finding the Fourth Proportional to 287,711,999.70, 431,567,999.55 and 164,890,079.70

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Solution

The fourth proportional to 287,711,999.70, 431,567,999.55 and 164,890,079.70 is: 247,335,119.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,711,999.70 : 431,567,999.55 = 164,890,079.70 : x
  2. Step 2: Convert to fraction form
    287,711,999.70/431,567,999.55 = 164,890,079.70/x
  3. Step 3: Cross multiply
    287,711,999.70x = 431,567,999.55 × 164,890,079.70
  4. Step 4: Simplify right side
    287,711,999.70x = 71,161,281,841,769,064
  5. Step 5: Solve for x
    x = 71,161,281,841,769,064/287,711,999.70
  6. Step 6: Final answer
    x = 247,335,119.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.