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Finding the Fourth Proportional to 210,475.36, 315,710.64 and 60,710.71

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Solution

The fourth proportional to 210,475.36, 315,710.64 and 60,710.71 is: 91,065.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,475.36 : 315,710.64 = 60,710.71 : x
  2. Step 2: Convert to fraction form
    210,475.36/315,710.64 = 60,710.71/x
  3. Step 3: Cross multiply
    210,475.36x = 315,710.64 × 60,710.71
  4. Step 4: Simplify right side
    210,475.36x = 19,167,017,108.95
  5. Step 5: Solve for x
    x = 19,167,017,108.95/210,475.36
  6. Step 6: Final answer
    x = 91,065.37

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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.