Home / 287,712,933.90-431,569,400.85-164,765,042.70

Finding the Fourth Proportional to 287,712,933.90, 431,569,400.85 and 164,765,042.70

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Solution

The fourth proportional to 287,712,933.90, 431,569,400.85 and 164,765,042.70 is: 247,147,564.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,712,933.90 : 431,569,400.85 = 164,765,042.70 : x
  2. Step 2: Convert to fraction form
    287,712,933.90/431,569,400.85 = 164,765,042.70/x
  3. Step 3: Cross multiply
    287,712,933.90x = 431,569,400.85 × 164,765,042.70
  4. Step 4: Simplify right side
    287,712,933.90x = 71,107,550,759,063,664
  5. Step 5: Solve for x
    x = 71,107,550,759,063,664/287,712,933.90
  6. Step 6: Final answer
    x = 247,147,564.05

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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.