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Finding the Fourth Proportional to 486,271.08, 728,907.66 and 186,670.98

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Solution

The fourth proportional to 486,271.08, 728,907.66 and 186,670.98 is: 279,814.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,271.08 : 728,907.66 = 186,670.98 : x
  2. Step 2: Convert to fraction form
    486,271.08/728,907.66 = 186,670.98/x
  3. Step 3: Cross multiply
    486,271.08x = 728,907.66 × 186,670.98
  4. Step 4: Simplify right side
    486,271.08x = 136,065,907,221.71
  5. Step 5: Solve for x
    x = 136,065,907,221.71/486,271.08
  6. Step 6: Final answer
    x = 279,814.93

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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.