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Finding the Fourth Proportional to 210,877.36, 291,014.40 and 115,392.40

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Solution

The fourth proportional to 210,877.36, 291,014.40 and 115,392.40 is: 159,243.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,877.36 : 291,014.40 = 115,392.40 : x
  2. Step 2: Convert to fraction form
    210,877.36/291,014.40 = 115,392.40/x
  3. Step 3: Cross multiply
    210,877.36x = 291,014.40 × 115,392.40
  4. Step 4: Simplify right side
    210,877.36x = 33,580,850,050.56
  5. Step 5: Solve for x
    x = 33,580,850,050.56/210,877.36
  6. Step 6: Final answer
    x = 159,243.51

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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.