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Finding the Fourth Proportional to 288,069.80, 432,104.70 and 260,076.20

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Solution

The fourth proportional to 288,069.80, 432,104.70 and 260,076.20 is: 390,114.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,069.80 : 432,104.70 = 260,076.20 : x
  2. Step 2: Convert to fraction form
    288,069.80/432,104.70 = 260,076.20/x
  3. Step 3: Cross multiply
    288,069.80x = 432,104.70 × 260,076.20
  4. Step 4: Simplify right side
    288,069.80x = 112,380,148,378.14
  5. Step 5: Solve for x
    x = 112,380,148,378.14/288,069.80
  6. Step 6: Final answer
    x = 390,114.30

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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.