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Finding the Fourth Proportional to 331,315.60, 497,119.20 and 153,731.20

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Solution

The fourth proportional to 331,315.60, 497,119.20 and 153,731.20 is: 230,664.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,315.60 : 497,119.20 = 153,731.20 : x
  2. Step 2: Convert to fraction form
    331,315.60/497,119.20 = 153,731.20/x
  3. Step 3: Cross multiply
    331,315.60x = 497,119.20 × 153,731.20
  4. Step 4: Simplify right side
    331,315.60x = 76,422,731,159.04
  5. Step 5: Solve for x
    x = 76,422,731,159.04/331,315.60
  6. Step 6: Final answer
    x = 230,664.45

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1.5x scale

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.