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Finding the Fourth Proportional to 510,445.72, 765,668.58 and 136,459

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Solution

The fourth proportional to 510,445.72, 765,668.58 and 136,459 is: 204,688.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,445.72 : 765,668.58 = 136,459 : x
  2. Step 2: Convert to fraction form
    510,445.72/765,668.58 = 136,459/x
  3. Step 3: Cross multiply
    510,445.72x = 765,668.58 × 136,459
  4. Step 4: Simplify right side
    510,445.72x = 104,482,368,758.22
  5. Step 5: Solve for x
    x = 104,482,368,758.22/510,445.72
  6. Step 6: Final answer
    x = 204,688.50

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Double scale
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Similar ratio
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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.