Home / 287,424,036.20-431,136,054.30-105,647,594.60

Finding the Fourth Proportional to 287,424,036.20, 431,136,054.30 and 105,647,594.60

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Solution

The fourth proportional to 287,424,036.20, 431,136,054.30 and 105,647,594.60 is: 158,471,391.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,424,036.20 : 431,136,054.30 = 105,647,594.60 : x
  2. Step 2: Convert to fraction form
    287,424,036.20/431,136,054.30 = 105,647,594.60/x
  3. Step 3: Cross multiply
    287,424,036.20x = 431,136,054.30 × 105,647,594.60
  4. Step 4: Simplify right side
    287,424,036.20x = 45,548,487,082,129,984
  5. Step 5: Solve for x
    x = 45,548,487,082,129,984/287,424,036.20
  6. Step 6: Final answer
    x = 158,471,391.90

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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.