Home / 289,517,714.72-399,538,487.76-157,358,669.60

Finding the Fourth Proportional to 289,517,714.72, 399,538,487.76 and 157,358,669.60

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Solution

The fourth proportional to 289,517,714.72, 399,538,487.76 and 157,358,669.60 is: 217,157,160.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,517,714.72 : 399,538,487.76 = 157,358,669.60 : x
  2. Step 2: Convert to fraction form
    289,517,714.72/399,538,487.76 = 157,358,669.60/x
  3. Step 3: Cross multiply
    289,517,714.72x = 399,538,487.76 × 157,358,669.60
  4. Step 4: Simplify right side
    289,517,714.72x = 62,870,844,887,909,480
  5. Step 5: Solve for x
    x = 62,870,844,887,909,480/289,517,714.72
  6. Step 6: Final answer
    x = 217,157,160.65

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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.