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Finding the Fourth Proportional to 390,865.02, 586,298.34 and 95,377.02

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Solution

The fourth proportional to 390,865.02, 586,298.34 and 95,377.02 is: 143,065.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,865.02 : 586,298.34 = 95,377.02 : x
  2. Step 2: Convert to fraction form
    390,865.02/586,298.34 = 95,377.02/x
  3. Step 3: Cross multiply
    390,865.02x = 586,298.34 × 95,377.02
  4. Step 4: Simplify right side
    390,865.02x = 55,919,388,500.15
  5. Step 5: Solve for x
    x = 55,919,388,500.15/390,865.02
  6. Step 6: Final answer
    x = 143,065.73

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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.