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Finding the Fourth Proportional to 403,002.57, 556,143.53 and 221,710.59

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Solution

The fourth proportional to 403,002.57, 556,143.53 and 221,710.59 is: 305,960.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,002.57 : 556,143.53 = 221,710.59 : x
  2. Step 2: Convert to fraction form
    403,002.57/556,143.53 = 221,710.59/x
  3. Step 3: Cross multiply
    403,002.57x = 556,143.53 × 221,710.59
  4. Step 4: Simplify right side
    403,002.57x = 123,302,909,052.43
  5. Step 5: Solve for x
    x = 123,302,909,052.43/403,002.57
  6. Step 6: Final answer
    x = 305,960.60

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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.