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Finding the Fourth Proportional to 430,525.48, 645,812.48 and 131,015.80

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Solution

The fourth proportional to 430,525.48, 645,812.48 and 131,015.80 is: 196,531.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,525.48 : 645,812.48 = 131,015.80 : x
  2. Step 2: Convert to fraction form
    430,525.48/645,812.48 = 131,015.80/x
  3. Step 3: Cross multiply
    430,525.48x = 645,812.48 × 131,015.80
  4. Step 4: Simplify right side
    430,525.48x = 84,611,638,717.18
  5. Step 5: Solve for x
    x = 84,611,638,717.18/430,525.48
  6. Step 6: Final answer
    x = 196,531.08

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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.