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Finding the Fourth Proportional to 403,708,809.80, 605,563,214.70 and 220,042,800.20

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Solution

The fourth proportional to 403,708,809.80, 605,563,214.70 and 220,042,800.20 is: 330,064,200.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,708,809.80 : 605,563,214.70 = 220,042,800.20 : x
  2. Step 2: Convert to fraction form
    403,708,809.80/605,563,214.70 = 220,042,800.20/x
  3. Step 3: Cross multiply
    403,708,809.80x = 605,563,214.70 × 220,042,800.20
  4. Step 4: Simplify right side
    403,708,809.80x = 133,249,825,460,701,808
  5. Step 5: Solve for x
    x = 133,249,825,460,701,808/403,708,809.80
  6. Step 6: Final answer
    x = 330,064,200.30

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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.