Home / 402,408,014.30-603,612,021.45-218,742,004.70

Finding the Fourth Proportional to 402,408,014.30, 603,612,021.45 and 218,742,004.70

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Solution

The fourth proportional to 402,408,014.30, 603,612,021.45 and 218,742,004.70 is: 328,113,007.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,408,014.30 : 603,612,021.45 = 218,742,004.70 : x
  2. Step 2: Convert to fraction form
    402,408,014.30/603,612,021.45 = 218,742,004.70/x
  3. Step 3: Cross multiply
    402,408,014.30x = 603,612,021.45 × 218,742,004.70
  4. Step 4: Simplify right side
    402,408,014.30x = 132,035,303,632,992,400
  5. Step 5: Solve for x
    x = 132,035,303,632,992,400/402,408,014.30
  6. Step 6: Final answer
    x = 328,113,007.05

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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.