Home / 281,182,123.15-388,001,789.63-155,731,032.79

Finding the Fourth Proportional to 281,182,123.15, 388,001,789.63 and 155,731,032.79

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Solution

The fourth proportional to 281,182,123.15, 388,001,789.63 and 155,731,032.79 is: 214,892,464.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,182,123.15 : 388,001,789.63 = 155,731,032.79 : x
  2. Step 2: Convert to fraction form
    281,182,123.15/388,001,789.63 = 155,731,032.79/x
  3. Step 3: Cross multiply
    281,182,123.15x = 388,001,789.63 × 155,731,032.79
  4. Step 4: Simplify right side
    281,182,123.15x = 60,423,919,423,448,208
  5. Step 5: Solve for x
    x = 60,423,919,423,448,208/281,182,123.15
  6. Step 6: Final answer
    x = 214,892,464.52

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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.