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Finding the Fourth Proportional to 371,381.51, 512,744.63 and 255,288.03

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Solution

The fourth proportional to 371,381.51, 512,744.63 and 255,288.03 is: 352,461.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,381.51 : 512,744.63 = 255,288.03 : x
  2. Step 2: Convert to fraction form
    371,381.51/512,744.63 = 255,288.03/x
  3. Step 3: Cross multiply
    371,381.51x = 512,744.63 × 255,288.03
  4. Step 4: Simplify right side
    371,381.51x = 130,897,565,209.34
  5. Step 5: Solve for x
    x = 130,897,565,209.34/371,381.51
  6. Step 6: Final answer
    x = 352,461.18

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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.