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Finding the Fourth Proportional to 432,040.60, 648,384.90 and 221,570.20

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Solution

The fourth proportional to 432,040.60, 648,384.90 and 221,570.20 is: 332,521.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,040.60 : 648,384.90 = 221,570.20 : x
  2. Step 2: Convert to fraction form
    432,040.60/648,384.90 = 221,570.20/x
  3. Step 3: Cross multiply
    432,040.60x = 648,384.90 × 221,570.20
  4. Step 4: Simplify right side
    432,040.60x = 143,662,771,969.98
  5. Step 5: Solve for x
    x = 143,662,771,969.98/432,040.60
  6. Step 6: Final answer
    x = 332,521.46

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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.