Home / 287,509,290.31-431,308,524.75-121,513,493.94

Finding the Fourth Proportional to 287,509,290.31, 431,308,524.75 and 121,513,493.94

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Solution

The fourth proportional to 287,509,290.31, 431,308,524.75 and 121,513,493.94 is: 182,289,086.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,509,290.31 : 431,308,524.75 = 121,513,493.94 : x
  2. Step 2: Convert to fraction form
    287,509,290.31/431,308,524.75 = 121,513,493.94/x
  3. Step 3: Cross multiply
    287,509,290.31x = 431,308,524.75 × 121,513,493.94
  4. Step 4: Simplify right side
    287,509,290.31x = 52,409,805,809,518,768
  5. Step 5: Solve for x
    x = 52,409,805,809,518,768/287,509,290.31
  6. Step 6: Final answer
    x = 182,289,086.22

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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.