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Finding the Fourth Proportional to 470,235.74, 648,925.16 and 255,375.86

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Solution

The fourth proportional to 470,235.74, 648,925.16 and 255,375.86 is: 352,418.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,235.74 : 648,925.16 = 255,375.86 : x
  2. Step 2: Convert to fraction form
    470,235.74/648,925.16 = 255,375.86/x
  3. Step 3: Cross multiply
    470,235.74x = 648,925.16 × 255,375.86
  4. Step 4: Simplify right side
    470,235.74x = 165,719,820,810.64
  5. Step 5: Solve for x
    x = 165,719,820,810.64/470,235.74
  6. Step 6: Final answer
    x = 352,418.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.