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Finding the Fourth Proportional to 474,666.51, 655,356.90 and 281,136.45

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Solution

The fourth proportional to 474,666.51, 655,356.90 and 281,136.45 is: 388,156.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    474,666.51 : 655,356.90 = 281,136.45 : x
  2. Step 2: Convert to fraction form
    474,666.51/655,356.90 = 281,136.45/x
  3. Step 3: Cross multiply
    474,666.51x = 655,356.90 × 281,136.45
  4. Step 4: Simplify right side
    474,666.51x = 184,244,712,349.01
  5. Step 5: Solve for x
    x = 184,244,712,349.01/474,666.51
  6. Step 6: Final answer
    x = 388,156.12

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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.