Home / 287,530.48-431,354.04-100,673.20

Finding the Fourth Proportional to 287,530.48, 431,354.04 and 100,673.20

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Solution

The fourth proportional to 287,530.48, 431,354.04 and 100,673.20 is: 151,030.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,530.48 : 431,354.04 = 100,673.20 : x
  2. Step 2: Convert to fraction form
    287,530.48/431,354.04 = 100,673.20/x
  3. Step 3: Cross multiply
    287,530.48x = 431,354.04 × 100,673.20
  4. Step 4: Simplify right side
    287,530.48x = 43,425,791,539.73
  5. Step 5: Solve for x
    x = 43,425,791,539.73/287,530.48
  6. Step 6: Final answer
    x = 151,030.22

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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.