Home / 387,020.80-534,090.24-217,263.36

Finding the Fourth Proportional to 387,020.80, 534,090.24 and 217,263.36

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Solution

The fourth proportional to 387,020.80, 534,090.24 and 217,263.36 is: 299,824.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,020.80 : 534,090.24 = 217,263.36 : x
  2. Step 2: Convert to fraction form
    387,020.80/534,090.24 = 217,263.36/x
  3. Step 3: Cross multiply
    387,020.80x = 534,090.24 × 217,263.36
  4. Step 4: Simplify right side
    387,020.80x = 116,038,240,085.61
  5. Step 5: Solve for x
    x = 116,038,240,085.61/387,020.80
  6. Step 6: Final answer
    x = 299,824.30

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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.