Home / 390,140.45-585,328.63-276,508.02

Finding the Fourth Proportional to 390,140.45, 585,328.63 and 276,508.02

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Solution

The fourth proportional to 390,140.45, 585,328.63 and 276,508.02 is: 414,845.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,140.45 : 585,328.63 = 276,508.02 : x
  2. Step 2: Convert to fraction form
    390,140.45/585,328.63 = 276,508.02/x
  3. Step 3: Cross multiply
    390,140.45x = 585,328.63 × 276,508.02
  4. Step 4: Simplify right side
    390,140.45x = 161,848,060,530.61
  5. Step 5: Solve for x
    x = 161,848,060,530.61/390,140.45
  6. Step 6: Final answer
    x = 414,845.63

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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.