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Finding the Fourth Proportional to 475,948.48, 656,809.90 and 261,090.28

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Solution

The fourth proportional to 475,948.48, 656,809.90 and 261,090.28 is: 360,305.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    475,948.48 : 656,809.90 = 261,090.28 : x
  2. Step 2: Convert to fraction form
    475,948.48/656,809.90 = 261,090.28/x
  3. Step 3: Cross multiply
    475,948.48x = 656,809.90 × 261,090.28
  4. Step 4: Simplify right side
    475,948.48x = 171,486,680,697.77
  5. Step 5: Solve for x
    x = 171,486,680,697.77/475,948.48
  6. Step 6: Final answer
    x = 360,305.13

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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.