Home / 287,494,885.80-431,242,328.70-134,439,877.80

Finding the Fourth Proportional to 287,494,885.80, 431,242,328.70 and 134,439,877.80

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Solution

The fourth proportional to 287,494,885.80, 431,242,328.70 and 134,439,877.80 is: 201,659,816.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,494,885.80 : 431,242,328.70 = 134,439,877.80 : x
  2. Step 2: Convert to fraction form
    287,494,885.80/431,242,328.70 = 134,439,877.80/x
  3. Step 3: Cross multiply
    287,494,885.80x = 431,242,328.70 × 134,439,877.80
  4. Step 4: Simplify right side
    287,494,885.80x = 57,976,165,972,615,440
  5. Step 5: Solve for x
    x = 57,976,165,972,615,440/287,494,885.80
  6. Step 6: Final answer
    x = 201,659,816.70

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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.