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Finding the Fourth Proportional to 372,656.81, 514,312.87 and 211,564.01

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Solution

The fourth proportional to 372,656.81, 514,312.87 and 211,564.01 is: 291,984.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,656.81 : 514,312.87 = 211,564.01 : x
  2. Step 2: Convert to fraction form
    372,656.81/514,312.87 = 211,564.01/x
  3. Step 3: Cross multiply
    372,656.81x = 514,312.87 × 211,564.01
  4. Step 4: Simplify right side
    372,656.81x = 108,810,093,171.81
  5. Step 5: Solve for x
    x = 108,810,093,171.81/372,656.81
  6. Step 6: Final answer
    x = 291,984.72

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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.