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Finding the Fourth Proportional to 364,984.40, 503,389.32 and 221,740.40

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Solution

The fourth proportional to 364,984.40, 503,389.32 and 221,740.40 is: 305,826.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    364,984.40 : 503,389.32 = 221,740.40 : x
  2. Step 2: Convert to fraction form
    364,984.40/503,389.32 = 221,740.40/x
  3. Step 3: Cross multiply
    364,984.40x = 503,389.32 × 221,740.40
  4. Step 4: Simplify right side
    364,984.40x = 111,621,749,172.53
  5. Step 5: Solve for x
    x = 111,621,749,172.53/364,984.40
  6. Step 6: Final answer
    x = 305,826.08

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1.5x scale

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.