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Finding the Fourth Proportional to 308,484.59, 425,756.86 and 187,663.77

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Solution

The fourth proportional to 308,484.59, 425,756.86 and 187,663.77 is: 259,005.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,484.59 : 425,756.86 = 187,663.77 : x
  2. Step 2: Convert to fraction form
    308,484.59/425,756.86 = 187,663.77/x
  3. Step 3: Cross multiply
    308,484.59x = 425,756.86 × 187,663.77
  4. Step 4: Simplify right side
    308,484.59x = 79,899,136,981.80
  5. Step 5: Solve for x
    x = 79,899,136,981.80/308,484.59
  6. Step 6: Final answer
    x = 259,005.28

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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.