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Finding the Fourth Proportional to 469,870.42, 648,415.78 and 255,010.63

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Solution

The fourth proportional to 469,870.42, 648,415.78 and 255,010.63 is: 351,911.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,870.42 : 648,415.78 = 255,010.63 : x
  2. Step 2: Convert to fraction form
    469,870.42/648,415.78 = 255,010.63/x
  3. Step 3: Cross multiply
    469,870.42x = 648,415.78 × 255,010.63
  4. Step 4: Simplify right side
    469,870.42x = 165,352,916,559.74
  5. Step 5: Solve for x
    x = 165,352,916,559.74/469,870.42
  6. Step 6: Final answer
    x = 351,911.74

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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.