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Finding the Fourth Proportional to 375,762.84, 563,480.42 and 142,127

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Solution

The fourth proportional to 375,762.84, 563,480.42 and 142,127 is: 213,128.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,762.84 : 563,480.42 = 142,127 : x
  2. Step 2: Convert to fraction form
    375,762.84/563,480.42 = 142,127/x
  3. Step 3: Cross multiply
    375,762.84x = 563,480.42 × 142,127
  4. Step 4: Simplify right side
    375,762.84x = 80,085,781,653.34
  5. Step 5: Solve for x
    x = 80,085,781,653.34/375,762.84
  6. Step 6: Final answer
    x = 213,128.53

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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.