Home / 287,780.56-397,122.60-160,431.52

Finding the Fourth Proportional to 287,780.56, 397,122.60 and 160,431.52

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Solution

The fourth proportional to 287,780.56, 397,122.60 and 160,431.52 is: 221,387.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,780.56 : 397,122.60 = 160,431.52 : x
  2. Step 2: Convert to fraction form
    287,780.56/397,122.60 = 160,431.52/x
  3. Step 3: Cross multiply
    287,780.56x = 397,122.60 × 160,431.52
  4. Step 4: Simplify right side
    287,780.56x = 63,710,982,344.35
  5. Step 5: Solve for x
    x = 63,710,982,344.35/287,780.56
  6. Step 6: Final answer
    x = 221,387.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.