Home / 287,011.22-430,546.01-76,663.94

Finding the Fourth Proportional to 287,011.22, 430,546.01 and 76,663.94

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Solution

The fourth proportional to 287,011.22, 430,546.01 and 76,663.94 is: 115,003.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,011.22 : 430,546.01 = 76,663.94 : x
  2. Step 2: Convert to fraction form
    287,011.22/430,546.01 = 76,663.94/x
  3. Step 3: Cross multiply
    287,011.22x = 430,546.01 × 76,663.94
  4. Step 4: Simplify right side
    287,011.22x = 33,007,350,941.83
  5. Step 5: Solve for x
    x = 33,007,350,941.83/287,011.22
  6. Step 6: Final answer
    x = 115,003.70

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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.