Home / 210,263.88-315,437.28-77,145.36

Finding the Fourth Proportional to 210,263.88, 315,437.28 and 77,145.36

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Solution

The fourth proportional to 210,263.88, 315,437.28 and 77,145.36 is: 115,733.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,263.88 : 315,437.28 = 77,145.36 : x
  2. Step 2: Convert to fraction form
    210,263.88/315,437.28 = 77,145.36/x
  3. Step 3: Cross multiply
    210,263.88x = 315,437.28 × 77,145.36
  4. Step 4: Simplify right side
    210,263.88x = 24,334,522,523.02
  5. Step 5: Solve for x
    x = 24,334,522,523.02/210,263.88
  6. Step 6: Final answer
    x = 115,733.25

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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.