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Finding the Fourth Proportional to 374,085.10, 561,206.46 and 121,345.86

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Solution

The fourth proportional to 374,085.10, 561,206.46 and 121,345.86 is: 182,044.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,085.10 : 561,206.46 = 121,345.86 : x
  2. Step 2: Convert to fraction form
    374,085.10/561,206.46 = 121,345.86/x
  3. Step 3: Cross multiply
    374,085.10x = 561,206.46 × 121,345.86
  4. Step 4: Simplify right side
    374,085.10x = 68,100,079,619.77
  5. Step 5: Solve for x
    x = 68,100,079,619.77/374,085.10
  6. Step 6: Final answer
    x = 182,044.35

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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.