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Finding the Fourth Proportional to 665,425.37, 998,220.90 and 260,565.32

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Solution

The fourth proportional to 665,425.37, 998,220.90 and 260,565.32 is: 390,880.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,425.37 : 998,220.90 = 260,565.32 : x
  2. Step 2: Convert to fraction form
    665,425.37/998,220.90 = 260,565.32/x
  3. Step 3: Cross multiply
    665,425.37x = 998,220.90 × 260,565.32
  4. Step 4: Simplify right side
    665,425.37x = 260,101,748,239.19
  5. Step 5: Solve for x
    x = 260,101,748,239.19/665,425.37
  6. Step 6: Final answer
    x = 390,880.42

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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.