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Finding the Fourth Proportional to 288,188.40, 432,273.40 and 130,416.88

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Solution

The fourth proportional to 288,188.40, 432,273.40 and 130,416.88 is: 195,621.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,188.40 : 432,273.40 = 130,416.88 : x
  2. Step 2: Convert to fraction form
    288,188.40/432,273.40 = 130,416.88/x
  3. Step 3: Cross multiply
    288,188.40x = 432,273.40 × 130,416.88
  4. Step 4: Simplify right side
    288,188.40x = 56,375,748,134.99
  5. Step 5: Solve for x
    x = 56,375,748,134.99/288,188.40
  6. Step 6: Final answer
    x = 195,621.16

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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.