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Finding the Fourth Proportional to 458,622.45, 687,901.28 and 159,030.45

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Solution

The fourth proportional to 458,622.45, 687,901.28 and 159,030.45 is: 238,534.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,622.45 : 687,901.28 = 159,030.45 : x
  2. Step 2: Convert to fraction form
    458,622.45/687,901.28 = 159,030.45/x
  3. Step 3: Cross multiply
    458,622.45x = 687,901.28 × 159,030.45
  4. Step 4: Simplify right side
    458,622.45x = 109,397,249,318.82
  5. Step 5: Solve for x
    x = 109,397,249,318.82/458,622.45
  6. Step 6: Final answer
    x = 238,534.44

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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.