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Finding the Fourth Proportional to 318,160.04, 476,970.95 and 138,110.15

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Solution

The fourth proportional to 318,160.04, 476,970.95 and 138,110.15 is: 207,048.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,160.04 : 476,970.95 = 138,110.15 : x
  2. Step 2: Convert to fraction form
    318,160.04/476,970.95 = 138,110.15/x
  3. Step 3: Cross multiply
    318,160.04x = 476,970.95 × 138,110.15
  4. Step 4: Simplify right side
    318,160.04x = 65,874,526,374.74
  5. Step 5: Solve for x
    x = 65,874,526,374.74/318,160.04
  6. Step 6: Final answer
    x = 207,048.40

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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.