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Finding the Fourth Proportional to 538,672.95, 808,009.29 and 139,354.02

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Solution

The fourth proportional to 538,672.95, 808,009.29 and 139,354.02 is: 209,031.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,672.95 : 808,009.29 = 139,354.02 : x
  2. Step 2: Convert to fraction form
    538,672.95/808,009.29 = 139,354.02/x
  3. Step 3: Cross multiply
    538,672.95x = 808,009.29 × 139,354.02
  4. Step 4: Simplify right side
    538,672.95x = 112,599,342,758.85
  5. Step 5: Solve for x
    x = 112,599,342,758.85/538,672.95
  6. Step 6: Final answer
    x = 209,031.00

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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.