Home / 208,590,702.21-287,869,718.37-137,903,499.63

Finding the Fourth Proportional to 208,590,702.21, 287,869,718.37 and 137,903,499.63

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Solution

The fourth proportional to 208,590,702.21, 287,869,718.37 and 137,903,499.63 is: 190,316,448.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,590,702.21 : 287,869,718.37 = 137,903,499.63 : x
  2. Step 2: Convert to fraction form
    208,590,702.21/287,869,718.37 = 137,903,499.63/x
  3. Step 3: Cross multiply
    208,590,702.21x = 287,869,718.37 × 137,903,499.63
  4. Step 4: Simplify right side
    208,590,702.21x = 39,698,241,600,725,496
  5. Step 5: Solve for x
    x = 39,698,241,600,725,496/208,590,702.21
  6. Step 6: Final answer
    x = 190,316,448.34

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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.