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Finding the Fourth Proportional to 475,840.35, 656,678.09 and 260,989.47

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Solution

The fourth proportional to 475,840.35, 656,678.09 and 260,989.47 is: 360,175.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    475,840.35 : 656,678.09 = 260,989.47 : x
  2. Step 2: Convert to fraction form
    475,840.35/656,678.09 = 260,989.47/x
  3. Step 3: Cross multiply
    475,840.35x = 656,678.09 × 260,989.47
  4. Step 4: Simplify right side
    475,840.35x = 171,386,065,364.77
  5. Step 5: Solve for x
    x = 171,386,065,364.77/475,840.35
  6. Step 6: Final answer
    x = 360,175.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.