Home / 666,240.29-999,430.50-216,996.20

Finding the Fourth Proportional to 666,240.29, 999,430.50 and 216,996.20

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Solution

The fourth proportional to 666,240.29, 999,430.50 and 216,996.20 is: 325,517.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,240.29 : 999,430.50 = 216,996.20 : x
  2. Step 2: Convert to fraction form
    666,240.29/999,430.50 = 216,996.20/x
  3. Step 3: Cross multiply
    666,240.29x = 999,430.50 × 216,996.20
  4. Step 4: Simplify right side
    666,240.29x = 216,872,620,664.10
  5. Step 5: Solve for x
    x = 216,872,620,664.10/666,240.29
  6. Step 6: Final answer
    x = 325,517.12

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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.