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Finding the Fourth Proportional to 223,209.72, 308,031.54 and 122,607.72

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Solution

The fourth proportional to 223,209.72, 308,031.54 and 122,607.72 is: 169,199.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,209.72 : 308,031.54 = 122,607.72 : x
  2. Step 2: Convert to fraction form
    223,209.72/308,031.54 = 122,607.72/x
  3. Step 3: Cross multiply
    223,209.72x = 308,031.54 × 122,607.72
  4. Step 4: Simplify right side
    223,209.72x = 37,767,044,807.49
  5. Step 5: Solve for x
    x = 37,767,044,807.49/223,209.72
  6. Step 6: Final answer
    x = 169,199.82

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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.