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Finding the Fourth Proportional to 243,411.51, 365,151.82 and 74,945.84

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Solution

The fourth proportional to 243,411.51, 365,151.82 and 74,945.84 is: 112,429.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,411.51 : 365,151.82 = 74,945.84 : x
  2. Step 2: Convert to fraction form
    243,411.51/365,151.82 = 74,945.84/x
  3. Step 3: Cross multiply
    243,411.51x = 365,151.82 × 74,945.84
  4. Step 4: Simplify right side
    243,411.51x = 27,366,609,514.67
  5. Step 5: Solve for x
    x = 27,366,609,514.67/243,411.51
  6. Step 6: Final answer
    x = 112,429.40

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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.