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Finding the Fourth Proportional to 469,886.30, 648,445 and 255,026.64

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Solution

The fourth proportional to 469,886.30, 648,445 and 255,026.64 is: 351,937.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,886.30 : 648,445 = 255,026.64 : x
  2. Step 2: Convert to fraction form
    469,886.30/648,445 = 255,026.64/x
  3. Step 3: Cross multiply
    469,886.30x = 648,445 × 255,026.64
  4. Step 4: Simplify right side
    469,886.30x = 165,370,749,574.80
  5. Step 5: Solve for x
    x = 165,370,749,574.80/469,886.30
  6. Step 6: Final answer
    x = 351,937.80

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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.