Home / 661,749.30-992,140.08-212,214.30

Finding the Fourth Proportional to 661,749.30, 992,140.08 and 212,214.30

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Solution

The fourth proportional to 661,749.30, 992,140.08 and 212,214.30 is: 318,166.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,749.30 : 992,140.08 = 212,214.30 : x
  2. Step 2: Convert to fraction form
    661,749.30/992,140.08 = 212,214.30/x
  3. Step 3: Cross multiply
    661,749.30x = 992,140.08 × 212,214.30
  4. Step 4: Simplify right side
    661,749.30x = 210,546,312,579.14
  5. Step 5: Solve for x
    x = 210,546,312,579.14/661,749.30
  6. Step 6: Final answer
    x = 318,166.28

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1.5x scale

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.