Home / 402,907,507.20-603,913,363.20-221,285,030.40

Finding the Fourth Proportional to 402,907,507.20, 603,913,363.20 and 221,285,030.40

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Solution

The fourth proportional to 402,907,507.20, 603,913,363.20 and 221,285,030.40 is: 331,681,551.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,907,507.20 : 603,913,363.20 = 221,285,030.40 : x
  2. Step 2: Convert to fraction form
    402,907,507.20/603,913,363.20 = 221,285,030.40/x
  3. Step 3: Cross multiply
    402,907,507.20x = 603,913,363.20 × 221,285,030.40
  4. Step 4: Simplify right side
    402,907,507.20x = 133,636,986,934,678,256
  5. Step 5: Solve for x
    x = 133,636,986,934,678,256/402,907,507.20
  6. Step 6: Final answer
    x = 331,681,551.09

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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.