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Finding the Fourth Proportional to 660,166.65, 990,302.82 and 210,950.76

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Solution

The fourth proportional to 660,166.65, 990,302.82 and 210,950.76 is: 316,443.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,166.65 : 990,302.82 = 210,950.76 : x
  2. Step 2: Convert to fraction form
    660,166.65/990,302.82 = 210,950.76/x
  3. Step 3: Cross multiply
    660,166.65x = 990,302.82 × 210,950.76
  4. Step 4: Simplify right side
    660,166.65x = 208,905,132,509.14
  5. Step 5: Solve for x
    x = 208,905,132,509.14/660,166.65
  6. Step 6: Final answer
    x = 316,443.03

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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.