Home / 288,170,972.80-397,671,971.52-157,790,780.80

Finding the Fourth Proportional to 288,170,972.80, 397,671,971.52 and 157,790,780.80

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Solution

The fourth proportional to 288,170,972.80, 397,671,971.52 and 157,790,780.80 is: 217,749,103.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,170,972.80 : 397,671,971.52 = 157,790,780.80 : x
  2. Step 2: Convert to fraction form
    288,170,972.80/397,671,971.52 = 157,790,780.80/x
  3. Step 3: Cross multiply
    288,170,972.80x = 397,671,971.52 × 157,790,780.80
  4. Step 4: Simplify right side
    288,170,972.80x = 62,748,970,888,416,168
  5. Step 5: Solve for x
    x = 62,748,970,888,416,168/288,170,972.80
  6. Step 6: Final answer
    x = 217,749,103.18

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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.