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Finding the Fourth Proportional to 387,031.98, 534,102.03 and 217,266.06

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Solution

The fourth proportional to 387,031.98, 534,102.03 and 217,266.06 is: 299,825.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,031.98 : 534,102.03 = 217,266.06 : x
  2. Step 2: Convert to fraction form
    387,031.98/534,102.03 = 217,266.06/x
  3. Step 3: Cross multiply
    387,031.98x = 534,102.03 × 217,266.06
  4. Step 4: Simplify right side
    387,031.98x = 116,042,243,696.10
  5. Step 5: Solve for x
    x = 116,042,243,696.10/387,031.98
  6. Step 6: Final answer
    x = 299,825.98

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1.5x scale

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.