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Finding the Fourth Proportional to 374,613.80, 561,920.70 and 121,918.10

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Solution

The fourth proportional to 374,613.80, 561,920.70 and 121,918.10 is: 182,877.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,613.80 : 561,920.70 = 121,918.10 : x
  2. Step 2: Convert to fraction form
    374,613.80/561,920.70 = 121,918.10/x
  3. Step 3: Cross multiply
    374,613.80x = 561,920.70 × 121,918.10
  4. Step 4: Simplify right side
    374,613.80x = 68,508,304,094.67
  5. Step 5: Solve for x
    x = 68,508,304,094.67/374,613.80
  6. Step 6: Final answer
    x = 182,877.15

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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.