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Finding the Fourth Proportional to 469,988.46, 648,595.80 and 255,128.52

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Solution

The fourth proportional to 469,988.46, 648,595.80 and 255,128.52 is: 352,083.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,988.46 : 648,595.80 = 255,128.52 : x
  2. Step 2: Convert to fraction form
    469,988.46/648,595.80 = 255,128.52/x
  3. Step 3: Cross multiply
    469,988.46x = 648,595.80 × 255,128.52
  4. Step 4: Simplify right side
    469,988.46x = 165,475,286,532.22
  5. Step 5: Solve for x
    x = 165,475,286,532.22/469,988.46
  6. Step 6: Final answer
    x = 352,083.72

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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.