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Finding the Fourth Proportional to 610,613.12, 916,003.14 and 211,146.68

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Solution

The fourth proportional to 610,613.12, 916,003.14 and 211,146.68 is: 316,748.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,613.12 : 916,003.14 = 211,146.68 : x
  2. Step 2: Convert to fraction form
    610,613.12/916,003.14 = 211,146.68/x
  3. Step 3: Cross multiply
    610,613.12x = 916,003.14 × 211,146.68
  4. Step 4: Simplify right side
    610,613.12x = 193,411,021,880.58
  5. Step 5: Solve for x
    x = 193,411,021,880.58/610,613.12
  6. Step 6: Final answer
    x = 316,748.88

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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.