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Finding the Fourth Proportional to 302,490.72, 452,943.36 and 213,261.12

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Solution

The fourth proportional to 302,490.72, 452,943.36 and 213,261.12 is: 319,332.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,490.72 : 452,943.36 = 213,261.12 : x
  2. Step 2: Convert to fraction form
    302,490.72/452,943.36 = 213,261.12/x
  3. Step 3: Cross multiply
    302,490.72x = 452,943.36 × 213,261.12
  4. Step 4: Simplify right side
    302,490.72x = 96,595,208,250.16
  5. Step 5: Solve for x
    x = 96,595,208,250.16/302,490.72
  6. Step 6: Final answer
    x = 319,332.80

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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.