Home / 287,824,914.40-397,198,380.40-155,665,908.80

Finding the Fourth Proportional to 287,824,914.40, 397,198,380.40 and 155,665,908.80

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Solution

The fourth proportional to 287,824,914.40, 397,198,380.40 and 155,665,908.80 is: 214,818,953.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,824,914.40 : 397,198,380.40 = 155,665,908.80 : x
  2. Step 2: Convert to fraction form
    287,824,914.40/397,198,380.40 = 155,665,908.80/x
  3. Step 3: Cross multiply
    287,824,914.40x = 397,198,380.40 × 155,665,908.80
  4. Step 4: Simplify right side
    287,824,914.40x = 61,830,246,858,854,112
  5. Step 5: Solve for x
    x = 61,830,246,858,854,112/287,824,914.40
  6. Step 6: Final answer
    x = 214,818,953.35

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1.5x scale

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.