Home / 287,520.90-431,364.66-119,010.12

Finding the Fourth Proportional to 287,520.90, 431,364.66 and 119,010.12

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Solution

The fourth proportional to 287,520.90, 431,364.66 and 119,010.12 is: 178,549.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,520.90 : 431,364.66 = 119,010.12 : x
  2. Step 2: Convert to fraction form
    287,520.90/431,364.66 = 119,010.12/x
  3. Step 3: Cross multiply
    287,520.90x = 431,364.66 × 119,010.12
  4. Step 4: Simplify right side
    287,520.90x = 51,336,759,950.36
  5. Step 5: Solve for x
    x = 51,336,759,950.36/287,520.90
  6. Step 6: Final answer
    x = 178,549.66

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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.