Home / 287,782.20-431,427.16-110,416.50

Finding the Fourth Proportional to 287,782.20, 431,427.16 and 110,416.50

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Solution

The fourth proportional to 287,782.20, 431,427.16 and 110,416.50 is: 165,530.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,782.20 : 431,427.16 = 110,416.50 : x
  2. Step 2: Convert to fraction form
    287,782.20/431,427.16 = 110,416.50/x
  3. Step 3: Cross multiply
    287,782.20x = 431,427.16 × 110,416.50
  4. Step 4: Simplify right side
    287,782.20x = 47,636,677,150.16
  5. Step 5: Solve for x
    x = 47,636,677,150.16/287,782.20
  6. Step 6: Final answer
    x = 165,530.31

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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.