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Finding the Fourth Proportional to 560,015.14, 840,021.10 and 139,291.01

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Solution

The fourth proportional to 560,015.14, 840,021.10 and 139,291.01 is: 208,936.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    560,015.14 : 840,021.10 = 139,291.01 : x
  2. Step 2: Convert to fraction form
    560,015.14/840,021.10 = 139,291.01/x
  3. Step 3: Cross multiply
    560,015.14x = 840,021.10 × 139,291.01
  4. Step 4: Simplify right side
    560,015.14x = 117,007,387,440.31
  5. Step 5: Solve for x
    x = 117,007,387,440.31/560,015.14
  6. Step 6: Final answer
    x = 208,936.11

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Similar ratio
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1.5x scale

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.