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Finding the Fourth Proportional to 288,610.16, 432,979.12 and 99,066.27

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Solution

The fourth proportional to 288,610.16, 432,979.12 and 99,066.27 is: 148,621.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,610.16 : 432,979.12 = 99,066.27 : x
  2. Step 2: Convert to fraction form
    288,610.16/432,979.12 = 99,066.27/x
  3. Step 3: Cross multiply
    288,610.16x = 432,979.12 × 99,066.27
  4. Step 4: Simplify right side
    288,610.16x = 42,893,628,153.79
  5. Step 5: Solve for x
    x = 42,893,628,153.79/288,610.16
  6. Step 6: Final answer
    x = 148,621.34

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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.