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Finding the Fourth Proportional to 288,458.56, 432,610.08 and 130,528

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Solution

The fourth proportional to 288,458.56, 432,610.08 and 130,528 is: 195,756.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,458.56 : 432,610.08 = 130,528 : x
  2. Step 2: Convert to fraction form
    288,458.56/432,610.08 = 130,528/x
  3. Step 3: Cross multiply
    288,458.56x = 432,610.08 × 130,528
  4. Step 4: Simplify right side
    288,458.56x = 56,467,728,522.24
  5. Step 5: Solve for x
    x = 56,467,728,522.24/288,458.56
  6. Step 6: Final answer
    x = 195,756.81

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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.