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Finding the Fourth Proportional to 293,402,279.80, 440,103,419.70 and 262,791,278.20

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Solution

The fourth proportional to 293,402,279.80, 440,103,419.70 and 262,791,278.20 is: 394,186,917.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,402,279.80 : 440,103,419.70 = 262,791,278.20 : x
  2. Step 2: Convert to fraction form
    293,402,279.80/440,103,419.70 = 262,791,278.20/x
  3. Step 3: Cross multiply
    293,402,279.80x = 440,103,419.70 × 262,791,278.20
  4. Step 4: Simplify right side
    293,402,279.80x = 115,655,340,203,154,048
  5. Step 5: Solve for x
    x = 115,655,340,203,154,048/293,402,279.80
  6. Step 6: Final answer
    x = 394,186,917.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.