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Finding the Fourth Proportional to 432,510.12, 648,348.48 and 290,394.27

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Solution

The fourth proportional to 432,510.12, 648,348.48 and 290,394.27 is: 435,311.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,510.12 : 648,348.48 = 290,394.27 : x
  2. Step 2: Convert to fraction form
    432,510.12/648,348.48 = 290,394.27/x
  3. Step 3: Cross multiply
    432,510.12x = 648,348.48 × 290,394.27
  4. Step 4: Simplify right side
    432,510.12x = 188,276,683,555.21
  5. Step 5: Solve for x
    x = 188,276,683,555.21/432,510.12
  6. Step 6: Final answer
    x = 435,311.63

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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.