Home / 287,628.62-431,637.34-100,641.74

Finding the Fourth Proportional to 287,628.62, 431,637.34 and 100,641.74

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Solution

The fourth proportional to 287,628.62, 431,637.34 and 100,641.74 is: 151,030.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,628.62 : 431,637.34 = 100,641.74 : x
  2. Step 2: Convert to fraction form
    287,628.62/431,637.34 = 100,641.74/x
  3. Step 3: Cross multiply
    287,628.62x = 431,637.34 × 100,641.74
  4. Step 4: Simplify right side
    287,628.62x = 43,440,732,946.57
  5. Step 5: Solve for x
    x = 43,440,732,946.57/287,628.62
  6. Step 6: Final answer
    x = 151,030.63

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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.