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Finding the Fourth Proportional to 287,361,531.80, 431,042,297.70 and 82,896,277.40

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Solution

The fourth proportional to 287,361,531.80, 431,042,297.70 and 82,896,277.40 is: 124,344,416.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,361,531.80 : 431,042,297.70 = 82,896,277.40 : x
  2. Step 2: Convert to fraction form
    287,361,531.80/431,042,297.70 = 82,896,277.40/x
  3. Step 3: Cross multiply
    287,361,531.80x = 431,042,297.70 × 82,896,277.40
  4. Step 4: Simplify right side
    287,361,531.80x = 35,731,801,881,272,584
  5. Step 5: Solve for x
    x = 35,731,801,881,272,584/287,361,531.80
  6. Step 6: Final answer
    x = 124,344,416.10

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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.