Home / 231,335,999.40-347,003,999.10-221,132,332.20

Finding the Fourth Proportional to 231,335,999.40, 347,003,999.10 and 221,132,332.20

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Solution

The fourth proportional to 231,335,999.40, 347,003,999.10 and 221,132,332.20 is: 331,698,498.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,335,999.40 : 347,003,999.10 = 221,132,332.20 : x
  2. Step 2: Convert to fraction form
    231,335,999.40/347,003,999.10 = 221,132,332.20/x
  3. Step 3: Cross multiply
    231,335,999.40x = 347,003,999.10 × 221,132,332.20
  4. Step 4: Simplify right side
    231,335,999.40x = 76,733,803,603,709,696
  5. Step 5: Solve for x
    x = 76,733,803,603,709,696/231,335,999.40
  6. Step 6: Final answer
    x = 331,698,498.30

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1.5x scale

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.