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Finding the Fourth Proportional to 510,487.72, 765,731.58 and 136,501

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Solution

The fourth proportional to 510,487.72, 765,731.58 and 136,501 is: 204,751.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,487.72 : 765,731.58 = 136,501 : x
  2. Step 2: Convert to fraction form
    510,487.72/765,731.58 = 136,501/x
  3. Step 3: Cross multiply
    510,487.72x = 765,731.58 × 136,501
  4. Step 4: Simplify right side
    510,487.72x = 104,523,126,401.58
  5. Step 5: Solve for x
    x = 104,523,126,401.58/510,487.72
  6. Step 6: Final answer
    x = 204,751.50

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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.