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Finding the Fourth Proportional to 660,670.14, 991,152.84 and 211,417.97

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Solution

The fourth proportional to 660,670.14, 991,152.84 and 211,417.97 is: 317,174.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,670.14 : 991,152.84 = 211,417.97 : x
  2. Step 2: Convert to fraction form
    660,670.14/991,152.84 = 211,417.97/x
  3. Step 3: Cross multiply
    660,670.14x = 991,152.84 × 211,417.97
  4. Step 4: Simplify right side
    660,670.14x = 209,547,516,436.77
  5. Step 5: Solve for x
    x = 209,547,516,436.77/660,670.14
  6. Step 6: Final answer
    x = 317,174.19

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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.