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Finding the Fourth Proportional to 288,570.80, 432,564.60 and 130,912.40

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Solution

The fourth proportional to 288,570.80, 432,564.60 and 130,912.40 is: 196,236.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,570.80 : 432,564.60 = 130,912.40 : x
  2. Step 2: Convert to fraction form
    288,570.80/432,564.60 = 130,912.40/x
  3. Step 3: Cross multiply
    288,570.80x = 432,564.60 × 130,912.40
  4. Step 4: Simplify right side
    288,570.80x = 56,628,069,941.04
  5. Step 5: Solve for x
    x = 56,628,069,941.04/288,570.80
  6. Step 6: Final answer
    x = 196,236.31

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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.