Home / 287,788,690.80-431,683,036.20-268,515,097.20

Finding the Fourth Proportional to 287,788,690.80, 431,683,036.20 and 268,515,097.20

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Solution

The fourth proportional to 287,788,690.80, 431,683,036.20 and 268,515,097.20 is: 402,772,645.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,788,690.80 : 431,683,036.20 = 268,515,097.20 : x
  2. Step 2: Convert to fraction form
    287,788,690.80/431,683,036.20 = 268,515,097.20/x
  3. Step 3: Cross multiply
    287,788,690.80x = 431,683,036.20 × 268,515,097.20
  4. Step 4: Simplify right side
    287,788,690.80x = 115,913,412,424,834,112
  5. Step 5: Solve for x
    x = 115,913,412,424,834,112/287,788,690.80
  6. Step 6: Final answer
    x = 402,772,645.80

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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.