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Finding the Fourth Proportional to 301,397.10, 451,931.40 and 91,007.70

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Solution

The fourth proportional to 301,397.10, 451,931.40 and 91,007.70 is: 136,461.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    301,397.10 : 451,931.40 = 91,007.70 : x
  2. Step 2: Convert to fraction form
    301,397.10/451,931.40 = 91,007.70/x
  3. Step 3: Cross multiply
    301,397.10x = 451,931.40 × 91,007.70
  4. Step 4: Simplify right side
    301,397.10x = 41,129,237,271.78
  5. Step 5: Solve for x
    x = 41,129,237,271.78/301,397.10
  6. Step 6: Final answer
    x = 136,461.95

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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.