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Finding the Fourth Proportional to 508,671.30, 762,971.64 and 153,687.18

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Solution

The fourth proportional to 508,671.30, 762,971.64 and 153,687.18 is: 230,520.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,671.30 : 762,971.64 = 153,687.18 : x
  2. Step 2: Convert to fraction form
    508,671.30/762,971.64 = 153,687.18/x
  3. Step 3: Cross multiply
    508,671.30x = 762,971.64 × 153,687.18
  4. Step 4: Simplify right side
    508,671.30x = 117,258,959,771.58
  5. Step 5: Solve for x
    x = 117,258,959,771.58/508,671.30
  6. Step 6: Final answer
    x = 230,520.10

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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.