Home / 287,646.12-431,663.58-100,659.24

Finding the Fourth Proportional to 287,646.12, 431,663.58 and 100,659.24

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Solution

The fourth proportional to 287,646.12, 431,663.58 and 100,659.24 is: 151,056.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,646.12 : 431,663.58 = 100,659.24 : x
  2. Step 2: Convert to fraction form
    287,646.12/431,663.58 = 100,659.24/x
  3. Step 3: Cross multiply
    287,646.12x = 431,663.58 × 100,659.24
  4. Step 4: Simplify right side
    287,646.12x = 43,450,927,898.48
  5. Step 5: Solve for x
    x = 43,450,927,898.48/287,646.12
  6. Step 6: Final answer
    x = 151,056.89

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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.