Home / 287,893.04-431,890.37-98,308.98

Finding the Fourth Proportional to 287,893.04, 431,890.37 and 98,308.98

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Solution

The fourth proportional to 287,893.04, 431,890.37 and 98,308.98 is: 147,480.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,893.04 : 431,890.37 = 98,308.98 : x
  2. Step 2: Convert to fraction form
    287,893.04/431,890.37 = 98,308.98/x
  3. Step 3: Cross multiply
    287,893.04x = 431,890.37 × 98,308.98
  4. Step 4: Simplify right side
    287,893.04x = 42,458,700,878.04
  5. Step 5: Solve for x
    x = 42,458,700,878.04/287,893.04
  6. Step 6: Final answer
    x = 147,480.82

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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.