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Finding the Fourth Proportional to 221,345,971.80, 332,018,957.70 and 67,999,655.40

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Solution

The fourth proportional to 221,345,971.80, 332,018,957.70 and 67,999,655.40 is: 101,999,483.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,345,971.80 : 332,018,957.70 = 67,999,655.40 : x
  2. Step 2: Convert to fraction form
    221,345,971.80/332,018,957.70 = 67,999,655.40/x
  3. Step 3: Cross multiply
    221,345,971.80x = 332,018,957.70 × 67,999,655.40
  4. Step 4: Simplify right side
    221,345,971.80x = 22,577,174,709,867,176
  5. Step 5: Solve for x
    x = 22,577,174,709,867,176/221,345,971.80
  6. Step 6: Final answer
    x = 101,999,483.10

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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.